Pull ups/ Low Fatigue Strength

Hey Drs. I just have a question regarding upper back work in the Low Fatigue Strength Template. I purchased the template because I’m trying to improve my strength in the big three, but I’m also trying to work on getting my first pull up. I’ve been doing negatives/ banded pull ups and I was wondering if it would be appropriate (or okay) to add those to the template as GPP. Thank you so much for all the free content you guys put out there!

mine situation is also the same.

Last month I started on your program for beginners at page 300-1 of SS. Since I am fit (36 y.o, 64 kg, 7-8 % body fat) and I already owned a dips belt, I started right away with weighted chin-ups in sets of 5 (after a BW warm-up set of 3). That’s hard but I am highly motivated and I progressed quickly up to 5x3 with +12,5 kg! Now I received the second book of yours (PPST), where the program includes pull-ups too; -why need I alternate pull-ups to chin-up? The second book also describes alternating weighted sets of 5 with 12+ sets at bodyweight in chin-ups (and pull-ups); -why do you prescribe sets of more than 5 repetitions (up to 15!) for pulls-up only? Thanks for your time