Outside wo without power?

I’m doing outside workouts with a Garmin 530 and a mtb with PM; now i added an ebike in order to also do lower intensities wo outside in the (steep) mountains around here.
It’s working very well, but the Bosch system does not broadcast metrics to the Garmin; i’m recording the activity on the 530 but check on the Bosch head unit for power.
Question is: can an outside workout be followed on the 530 without power data? So i can at least get directions for the workout (power target for each interval and especially timing) and not have to try to remember all of that. It’s easy for longer rides (eg. 1h @160W) but harder for multiple / shorter intervals.

Look for the topic on Outdoors Workouts and Perceived Effort


Riding by Feel: TrainerRoad Outside Workouts With RPE - TrainerRoad Blog

Outside Workouts With RPE: a Power Analysis - TrainerRoad Blog