Hi
I'm not sure if this is the correct place to post this but I was looking into the 'Force user to login' and found that the default is labelled differently in Totara than it is in Moodle. In Moodle the default is labeled 'No' and in Totara it is labeled 'Yes' but if you leave it unticked in Totara then the user isn't forced to login so I think the lable is incorrect.
Please see the attached Moodle login settings and I'll upload the Totara login settings in a reply thread.
Regards Michele