diff --git a/src/vault/gear/scheduler-commutator.hpp b/src/vault/gear/scheduler-commutator.hpp
index 69d2c44df..28bd0a836 100644
--- a/src/vault/gear/scheduler-commutator.hpp
+++ b/src/vault/gear/scheduler-commutator.hpp
@@ -145,44 +145,17 @@ namespace gear {
       Activity*
       findWork (SchedulerInvocation& layer1, Time now)
         {
-          layer1.feedPrioritisation();
-          UNIMPLEMENTED("wtf??");
-          while (layer1.isDue (currentSchedulerTime()))
+          if (holdsGroomingToken(std::this_thread::get_id())
+              or acquireGoomingToken())
             {
-              Activity* activity = layer1.pullHead();
-              if (isInternalWork (activity))
-                performInternalWork (activity);
-              else
-                {
-                  performExternalWork (activity);
-                  UNIMPLEMENTED("return");
-                }
+              layer1.feedPrioritisation();
+              if (layer1.isDue (now))
+                return layer1.pullHead();
             }
+          return nullptr;
         }
       
-      Time
-      currentSchedulerTime()  const
-        {
-          UNIMPLEMENTED ("how to manage the current scheduler time");
-        }
       
-      bool
-      isInternalWork (Activity* activity)
-        {
-          UNIMPLEMENTED ("determine if an Activity counts as internal management task");
-        }
-      
-      void
-      performInternalWork (Activity* activity)
-        {
-          UNIMPLEMENTED ("evaluate a term");
-        }
-      
-      void
-      performExternalWork (Activity* activity)
-        {
-          UNIMPLEMENTED ("drop the exclusion flag and then engage into the external render activity");
-        }
       
       template<class EXE>
       activity::Proc
diff --git a/tests/vault/gear/scheduler-commutator-test.cpp b/tests/vault/gear/scheduler-commutator-test.cpp
index d06174099..8bff31bbe 100644
--- a/tests/vault/gear/scheduler-commutator-test.cpp
+++ b/tests/vault/gear/scheduler-commutator-test.cpp
@@ -53,6 +53,8 @@ namespace test {
   using lib::time::Time;
   using std::atomic_bool;
   using lib::ThreadHookable;
+  using lib::thread::ThreadWrapper;
+  
   using std::unique_ptr;
   using std::make_unique;
   using std::this_thread::yield;
@@ -202,7 +204,11 @@ namespace test {
                                        while (not stopTheHog_);
                                        sched.dropGroomingToken();
                                      }}
-                                 .atExit([&]{ groomingHog_.reset(); })
+                                 .atExit([&](ThreadWrapper& handle)
+                                           {
+                                             handle.detach_thread_from_wrapper();
+                                             groomingHog_.reset();
+                                           })
                                  .threadID("grooming-hog"));
           sleep_for (500us);
         }
@@ -218,8 +224,8 @@ namespace test {
       
       
       
-      /** @test TODO verify the decision logic where and when
-       *        to perform the dispatch of an Scheduler Activity chain.
+      /** @test verify the decision logic where and when to perform
+       *        the dispatch of an Scheduler Activity chain.
        * @todo WIP 10/23 ✔ define ⟶ ✔ implement
        */
       void
@@ -267,8 +273,8 @@ namespace test {
       
       
       
-      /** @test TODO verify logic of queue updates and work prioritisation.
-       * @todo WIP 10/23 🔁 define ⟶ implement
+      /** @test verify logic of queue updates and work prioritisation.
+       * @todo WIP 10/23 ✔ define ⟶ ✔ implement
        */
       void
       verify_findWork()
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index 637956633..d1f94dac2 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -85018,10 +85018,10 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697553250983" ID="ID_438556046" MODIFIED="1697553470423" TEXT="doWork &#x27fc; findWork">
+<node COLOR="#338800" CREATED="1697553250983" ID="ID_438556046" MODIFIED="1697594581615" TEXT="doWork &#x27fc; findWork">
 <linktarget COLOR="#7b8795" DESTINATION="ID_438556046" ENDARROW="Default" ENDINCLINATION="28;-22;" ID="Arrow_ID_520978128" SOURCE="ID_1600142035" STARTARROW="None" STARTINCLINATION="-463;26;"/>
 <linktarget COLOR="#718daf" DESTINATION="ID_438556046" ENDARROW="Default" ENDINCLINATION="-261;714;" ID="Arrow_ID_1821254034" SOURCE="ID_1076701414" STARTARROW="None" STARTINCLINATION="372;24;"/>
-<icon BUILTIN="flag-yellow"/>
+<icon BUILTIN="button_ok"/>
 <node CREATED="1697560260874" ID="ID_1507199243" MODIFIED="1697560276691" TEXT="versucht das GroomingToken zu erlangen"/>
 <node CREATED="1697560224719" ID="ID_1707640697" MODIFIED="1697560260107" TEXT="macht die Queue-Updates"/>
 <node CREATED="1697560285403" ID="ID_1068838996" MODIFIED="1697560290998" TEXT="braucht aktuelle Zeit als Argument"/>
@@ -85037,6 +85037,22 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
   </body>
 </html></richcontent>
 </node>
+<node CREATED="1697594585841" ID="ID_302244305" MODIFIED="1697594602321" TEXT="falls nichts gefunden..">
+<node CREATED="1697594603461" ID="ID_1650388592" MODIFIED="1697594606354" TEXT="nullptr"/>
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1697594606701" ID="ID_364246048" MODIFIED="1697594671903" TEXT="GroomingToken nicht l&#xf6;schen">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      man k&#246;nnte es hier auch freigeben; das w&#252;rde dann aber im Regelfall ein weiteres mal gepr&#252;ft und freigegeben; zudem haben wir hier auf dieser Ebene auch kein try-catch
+    </p>
+  </body>
+</html></richcontent>
+<icon BUILTIN="yes"/>
+</node>
+</node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697553556862" ID="ID_239855477" MODIFIED="1697553563674" TEXT="PostDispatch">
 <icon BUILTIN="flag-yellow"/>
@@ -85081,14 +85097,14 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 <node COLOR="#435e98" CREATED="1697559664030" ID="ID_406981503" MODIFIED="1697559736138" TEXT="Entscheidung">
 <icon BUILTIN="yes"/>
-<node CREATED="1697559679293" ID="ID_91432759" MODIFIED="1697559690783" TEXT="auch Layer-2 ist ein Funktionalit&#xe4;ts-Layer"/>
-<node CREATED="1697559691347" ID="ID_622772582" MODIFIED="1697559708959" TEXT="der Service wird erst im Scheduler top-Level zusammengestellt"/>
-<node CREATED="1697559712744" ID="ID_1900900735" MODIFIED="1697559730521" TEXT="dort passiert auch jedwede Dependency-Injection"/>
+<node CREATED="1697559679293" ID="ID_91432759" MODIFIED="1697594534424" TEXT="auch Layer-2 ist ein Funktionalit&#xe4;ts-Layer"/>
+<node CREATED="1697559691347" ID="ID_622772582" MODIFIED="1697594534424" TEXT="der Service wird erst im Scheduler top-Level zusammengestellt"/>
+<node CREATED="1697559712744" ID="ID_1900900735" MODIFIED="1697594534424" TEXT="dort passiert auch jedwede Dependency-Injection"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697553674095" ID="ID_1453351337" MODIFIED="1697583424961" TEXT="decideDispatchNow">
+<node COLOR="#338800" CREATED="1697553674095" ID="ID_1453351337" MODIFIED="1697594493393" TEXT="decideDispatchNow">
 <linktarget COLOR="#6d677a" DESTINATION="ID_1453351337" ENDARROW="Default" ENDINCLINATION="3;-38;" ID="Arrow_ID_1868115325" SOURCE="ID_937487663" STARTARROW="None" STARTINCLINATION="-51;3;"/>
-<icon BUILTIN="flag-yellow"/>
+<icon BUILTIN="button_ok"/>
 <node CREATED="1697579158340" ID="ID_793480355" MODIFIED="1697579176584" TEXT="Ausf&#xfc;hren ist m&#xf6;glich...">
 <icon BUILTIN="info"/>
 <node CREATED="1697579178708" ID="ID_787430790" MODIFIED="1697579237139" TEXT="wenn der Startzeitpunkt nicht in der Zukunft liegt"/>
@@ -86262,8 +86278,8 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <icon BUILTIN="button_ok"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1697560535930" ID="ID_849370574" MODIFIED="1697590666428" TEXT="verify_findWork">
-<icon BUILTIN="pencil"/>
+<node COLOR="#338800" CREATED="1697560535930" ID="ID_849370574" LINK="#ID_438556046" MODIFIED="1697594486097" TEXT="verify_findWork">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1697585964522" ID="ID_1835507068" MODIFIED="1697585970582" TEXT="Szenarien">
 <icon BUILTIN="list"/>
 <node COLOR="#435e98" CREATED="1697586050195" ID="ID_1746743909" MODIFIED="1697587479840" TEXT="leere Queue &#x27f9; nix"/>
@@ -86275,6 +86291,9 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <arrowlink COLOR="#90adb5" DESTINATION="ID_572620103" ENDARROW="Default" ENDINCLINATION="218;11;" ID="Arrow_ID_1616847265" STARTARROW="None" STARTINCLINATION="246;26;"/>
 </node>
 </node>
+<node COLOR="#338800" CREATED="1697594466088" ID="ID_1087439264" MODIFIED="1697594474623" TEXT="einfache Implementierung: funktioniert">
+<icon BUILTIN="button_ok"/>
+</node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1697560546952" ID="ID_1326942653" MODIFIED="1697560620824" TEXT="verify_postDispatch">
 <icon BUILTIN="flag-yellow"/>