Bodyweight Apocalypse Program

Hi Christian
In the apocalypse bodyweight program on the concentric day you have the back workout .
Could you explain abit more or send a video of how to do the mechanical drop set with the rear delt raises with bands above the head and rear delt raises at shoulder height as I cannot find anything showing me .
Hope you can help .
Thankyou in advance.

Above head: raise arms overhead and make the “I” position. Keeping arms straight, open and lower to make the “T” position. Simple.

Shoulder height is a pull apart.