Thank you. I will check into it. Technically it's not a core edit as much as it would be a CB Plugin edit, but I understand as it isn't a standard feature currently.
I'm not sure it's a requirement for a lot of people, but it would be nice if you could consider adding in at least the time step configuration into the groupjive back-end management section at some point. This way site admins could easily adjust settings for all groups. In my situation I am also looking to set the user event start and end range as I have no need for groups to create midnight events, but I should be able to figure it out from the link.
Edit: already figured it out. Thanks!
To limit the range of time listed for the create event selection:
components/com_comprofiler/plugin/user/plug_cbgroupjive/plugin/cbgroupjiveevents/js/jquery-timepicker.min.js
Changing the values in Bold will limit your time range -
fn.timePicker.defaults={
step:15,startTime:new Date(0,0,0,
8,0,0),endTime:new Date(0,0,0,
18,30,0)
Times to be selected are now only 8:00am - 6:30pm in 15 minute increments.