I am playing on version .796a. The developer has stated doing the studio scenes manually will add tags, I have not tried this to confirm it works. As for the P.A. Scheduling, they schedule Sunday at midnight. There would be 3 possible reasons they didn't schedule.
1st) there are scheduled scenes.
2nd) There are not enough available models to do the scenes.
3rd) You do not have enough money to schedule the scenes. This will show in the production report with no money.
I am using the P.A. to schedule so I can get the tags. It seems some tags are not available, I was trying to get the Cosplay tag as I had a need on a website for these scenes. They do not seem to be possible. Tags like gym, school also do not seem to be available.
Hope this helps, Good luck
1. check and correct working on my end
2. in my second playthrough i use cheat to make sure and check if the PA using my level 10 model female and male keep making scene with low level model with my high level ones for example I have my female main at lvl 10 due to cheat and alice at lvl 10 mostly I have 5 lvl 10 female and 10 low level female at either lvl 6 - lvl 8 and i have more than enough ebony male at lvl 10 and few latino male lvl 6 - lvl 8 problem is PA using low level males to do scene with my high level female which is my main female and alice, and when i manually produce the scene check everyday all of my lvl 10 ebony male are available since all of them are in contract also my latino males. TLDR what i wanted is have my room 1 only using high level performers while room 2 where i throw all the low level performers.
3. i use cheat on my second playthrough to make sure its working.
4. and if your asking about happiness i cheat on that thing as well i use cheat to check and make sure everything is working as it should.