This was originally posted by a UBOSbox Nextcloud user on the UBOS support forums here: https://forum.ubos.net/viewtopic.php?f=14&t=803. I wonder whether these are known issues?
Got to user management, added a group “Fenton”. I entered the admin password as requested, but then got an error that I didn’t enter my password in time (even though I did it pretty fast). But it did create the group despite the message
Then I tried to create a user “fenton” in that group. Failed. So I tried again, and got another error that the user exists, even though it wasn’t visible on the user page. So I navigated to a different page and back to the user list, and sure enough it was there. Not sure what the failure was; perhaps it didn’t like that my username and group name were the same (modulo capitalization).