Kolie Moore test.... some help please on how to structure

I’ve got a wheel on trainer (Tacx Vortex) and only have erg or resistance mode. If I have a play around prior to the actual workout and I set it to free ride for example - What am I looking for to tell me I’m in the right ballpark for the whole workout? My FTP is now set at 221 if that’s an important deciding factor.

Thanks again for your help - It’s all really helpf