Currently, to perform an attended transfer (warm transfer), users are forced to disable the "Single call mode" in the settings and use the multi-window extended layout. It would be highly beneficial to have a native option or wizard for an attended transfer directly inside the Single Call Mode window.

When clicking "Transfer", the app could allow dialing the second party, putting the original call automatically on hold within the same interface, and completing the transfer after a brief consultation. This would keep the interface clean and simple while providing essential PBX features.