Voice conference UX is confusing

Three experienced geeks tested group voice chat on Jami a few months ago. We found that the control for launching a one-to-one voice chat between two users is simple and obvious, but it's not clear how to start a voice conference with three or more users. It took us a lot of experimentation to figure out how to do it.

I'm guessing this is something that might improve if and when you add the capacity for group text chat? In Wire, the users who want to have a voice conference first join a group text chat, then launch a voice chat using the usual control. Will the Jami UI work something like that at some point in the future?

Some other ways the UI could work

• one user can select 2 or more other users, before launching a voice chat
• during an existing voice chat, a "+" control appears next to each participating user's other contacts. Clicking that control brings that user into the voice conference.