Hi @YourPalMichael
One possible solution is you could add trigger condition to allow execution of flow when message is posted in a particular group and would restrict the execution for different group.
Here is the example:
Firstly, get the conversation Id of the CVN group from the previous successful flow run instance. You need to copy it for use in next step:

Next, edit the flow. Click ellipses menu (...) & select "Settings" from sub menu. Scroll down to 'Trigger condition' and add the below condition. Press Done to save the changes:


@equals(first(triggerOutputs()?['body/value'])?['conversationId'], '19:55b25f53c48444e29ba1e122235c96b9@thread.v2')
Pls replace the actual conversation Id in the above expression.
Save changes & retest the flow. Now, flow will execute only when messages are posted in "CVN" group but not for messages posted in other groups.
If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.
Thanks