Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
Only registered leaders can be added to the leader roster in Scoutbook. Do the adults you want to add appear on your roster at my.scouting.org? If you post their BSA Member IDs or Scoutbook User IDs (both available in the Scoutbook profile) we can investigate. We do not need names.
I’m having the same problem. I have a registered adult who is an active den leader . I’m trying to make a pack admin but I cannot add a new role to him. He’s oddly the only one who doesn’t have that button show up on. All the other adults have the button available to me.
It does not appear as if your recharter for 2022 has posted. The leaders with MIDs you provided are registered through 12/31/21. I suspect this is why you are unable to update their positions in Scoutbook.