I have a Starplus STSe. It's been freshly reprogrammed after my last one died

First item:
With the paging, for some unknown (to me) reason dialing 721 will not do an all call to the rest of the stations. However dialing 700 (all call internal + external) and 701 (all call zone 1) works for calling all the stations. I have every station set to zone 1 for paging that I know of. Not a huge issue, but mildly intriguing as to why it wouldn't work with 721.
Second issue:
I have auto attendant picking up every call. Folks usually dial 0 to talk to the main office. I'm looking to have between 4pm and 7am when someone dials 0 (or 100) it will forward to 100's voicemail automatically since no-one is there to answer. Is that the day/night answer schedule?
It's getting late for me, and the major issues have been solved. But you'alls insight is invaluable.