I agree that it is not that clear, but I can explian it to you. The sets of pullups/pushups that are banded/modified have variations described in the notes. The banded pull ups have a 1/1000 pause at the middle and the top of each rep.
The modified pushup have the same 1/1000 pause at the middle and top. The band is there to make this hard pull up variation easier and the push ups are modified for the same reason. A modified push up would just be done off a higher surface than the floor (hands on a bench or box).

It would go like this. You do 10 pull ups pausing half way up and at the top for 1/1000, using a band if needed to complete the reps. Then you would do 10 regular ol’ pull ups. Next do the push ups with the same modification, pausing at the bottom and half way up with your hands elevated if needed to complete the 10 reps, then do 10 regular ol’ push ups.
Repeat this entire fiasco 3 times.