It’s impossible to change FTP during a training plan as settings now doesn’t have an FTP adjustment (why?). As such, you would need to leave the training plan to do a workout to edit the FTP.
I really like Zwift, but why not have FTP as part of settings. Madness.
Hallelujah. I’ve downloaded Zwift to my PC and able to edit FTP via the pencil icon. Weird that it is unclear there are two areas of settings, the pencil and the gear symbol.