Plan Builder Questions

I’m already almost done, on my last week of SSB I, is there a way to remove a phase from the plan build without having to manually move everything around in the calendar? So I want to build a plan starting next week but remove the first build phase entirely

the only way I found to do that was to backdate the start of the plan, it actually did not added any workout on past date and I had to then remove the duplicate workouts for the current week, not too big of a deal.