A key question would be when the professional development activity happens. Is it once a week or multiple times a week, across a 6-week span or larger block of time? Is one person involved in the activity or are multiple people involved? Is it complex, with satellite staff groupings coming together for a scheduled webinar, then meeting in subgroups afterwards on a regular basis?
If time needs to be given to teachers, leaving the scheduling of that time to them (ie. for an online course, professional reading, visits to local educational settings), then an allowance is the least restrictive measure. Allowances are time given to teachers for a specific purpose (eg. Professional Reading 60 mins weekly). E10 includes the Allowance time in a teacher’s allocation, ensuring they are not overloaded when the program automatically allocates teachers to classes.
If time during the school day is needed, and one or more teachers will meet at the same time, then a Meeting might be more appropriate. A meeting can easily be created for one or more teachers, and hard-coded to a specific time in the week. Construction in the master grid will work around this hard coded meeting when you're building the timetable.
Preferred unavailability refers to times where teachers are available (ie. not during a part-time day off), but would prefer to be kept free. Preferred unavailability is considered as the timetable is built, with E10 attempting to keep classes away from these periods.
Once the timetable is built, E10's powerful PPA Roster capability can encourage or discourage PPA to be placed during a teacher’s preferred unavailable time.
School leaders are able to encourage grouping of teachers as follows:
Split class (eg. Year 12 and 13 teachers)
Faculties they are connected to (eg. Maths teachers),
Courses (eg. Grade 7 Maths teachers)
Home/Class group (eg. 8J’s teachers)
Houses (eg. Red house teachers)
Perhaps you have a group of teachers engaged in a path of formal study, with a regularly occurring webinar for two hours on Wednesday morning, plus three other sessions given to the group to meet on assignment work at any given time. Use a single Meeting to bring the group together for four Wednesday morning sessions in a two-week timetable (WedA1, WedA2, WedB1, WedB2), with the Periods column used to hard-code just the Wednesday sessions, leaving the other three to find their best place in the timetable.