I'm looking for a way to display an unintrusive pop-up in MS Teams meeting through a custom in-meeting app (similar to https://docs.microsoft.com/en-us/microsoftteams/platform/apps-in-teams-meetings/design/designing-apps-in-meetings#desktop-2). Unless closed by user, this pop-up needs to remain open regardless of whether any content is being shared/displayed in the video feed, or chats/any other apps are opened in side panel. The Polly app displays a similar pop-up when questions are sent in the duration of a meeting.
Is a meeting content bubble (reference: https://docs.microsoft.com/en-us/microsoftteams/platform/sbs-meeting-content-bubble) the right way to do this? Can content bubbles be used without a bot? Are there any other ways to implemented such a pop-up?