diff --git a/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.lua b/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.lua
new file mode 100644
index 0000000000..7de37e0fd3
--- /dev/null
+++ b/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.lua	
@@ -0,0 +1,28 @@
+-------------------------------------------------------------------------
+-- SPA-400 - OnSpawnGroup
+-------------------------------------------------------------------------
+-- Documentation
+-- 
+-- SPAWN: https://flightcontrol-master.github.io/MOOSE_DOCS/Documentation/Core.Spawn.html##(SPAWN).OnSpawnGroup
+-- 
+-------------------------------------------------------------------------
+-- Join the game master slot. The 2nd A-10 will start following the 
+-- 1st A-10 around.
+-------------------------------------------------------------------------
+-- Date: Feb 2023
+-------------------------------------------------------------------------
+
+local group1 = SPAWN:New("Aerial-1")
+  :OnSpawnGroup(
+    function(grp) -- this anonymous function will be called with the already spawned GROUP object for group one
+      local group2 = SPAWN:New("Aerial-2")
+        :OnSpawnGroup(
+          function(grp2) -- this anonymous function will be called with the already spawned GROUP object for group two
+            local task = grp2:TaskFollow(grp,{x=100,y=0,z=100}) -- create a DCS task structure
+            grp2:SetTask(task,1) -- set this as only task for group two
+          end
+        )
+        :Spawn() -- Spawn group two
+    end
+  )
+  :Spawn() -- Spawn group one
\ No newline at end of file
diff --git a/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.miz b/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.miz
new file mode 100644
index 0000000000..53d94e4963
Binary files /dev/null and b/SPA - Spawning/SPA-400 - OnSpawnGroup/SPA-400 - OnSpawnGroup.miz differ
diff --git a/SPA - Spawning/SPA-400 - OnSpawnGroup/pack.ps1 b/SPA - Spawning/SPA-400 - OnSpawnGroup/pack.ps1
new file mode 100644
index 0000000000..bbac66e7c1
--- /dev/null
+++ b/SPA - Spawning/SPA-400 - OnSpawnGroup/pack.ps1	
@@ -0,0 +1,10 @@
+$dir = split-path -parent $MyInvocation.MyCommand.Definition
+cd $dir
+$file = Split-Path $dir -leaf
+
+$dir
+$file
+
+cd "_unpacked"
+. 7z a -r -y -tzip "..\$file.miz" *
+cd ..
diff --git a/SPA - Spawning/SPA-400 - OnSpawnGroup/unpack.ps1 b/SPA - Spawning/SPA-400 - OnSpawnGroup/unpack.ps1
new file mode 100644
index 0000000000..c208a31858
--- /dev/null
+++ b/SPA - Spawning/SPA-400 - OnSpawnGroup/unpack.ps1	
@@ -0,0 +1,7 @@
+$dir = split-path -parent $MyInvocation.MyCommand.Definition
+cd $dir
+$file = Split-Path $dir -leaf
+Remove-Item .\_unpacked -Force -Recurse
+md "_unpacked"
+cd "_unpacked"
+. 7z x -r -y "..\$file.miz" *