Is there any way I can create (using core functionalities or plugins) some kind of availability timesheet/calendar? I'd like the members of my team to plan which hours would they like to work on every day. I've tried a couple of plugins (e.g. tempo timesheets and teamlead calendar) but they all use issues as a base for planning - my perfect scenario would be to simply allow them say "I'll be working 9am-5pm on Monday, 6pm - 1am on Tuesday etc.
Any recommendations?