Let the user type in exact values. I have a course which is only 2 minutes long, using the automatic option sets it to 3 minutes, setting to manual won't let me set to 2 minutes, it either starts at 3 and moves up in 5s or I switch it off, publish then reopen and change to manual and it starts at 5.
Also needs an option to select multiple courses at once and change the estimated time to complete on all of them.
Its a nice feature but isn't working perfectly.