Stacking Strength Training with FTP Building Block

I’m doing the FTP building block, 3 weeks on 1 week off (starting today!) and I would like to stack the intermediate strength training program on top of this. My question is this: Are the strength training workouts allocated to certain days based on the FTP Building Block plan? If not, what days should I do them? I can’t find a clear answer in the FAQs.

Thanks