Hi @Michał Kluz ,
We heard back from the engineering team, and they confirmed that ACS does not currently support your scenario as of today. However, it is on the roadmap. You can find details about what's supported here in this doc:
https://learn.microsoft.com/en-us/azure/communication-services/concepts/interop/teams-user-calling#detailed-teams-capabilities.
In the meantime, the ACS team would like to learn more bout your scenario. Please fill out this form so they can engage with you directly.
Hope that helps. Please let us know if you have further questions
Thanks,
Grace
------------------------------------------------------------------------------------------------------------------------------
--If the reply is helpful, please Upvote and Accept as answer--