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Sending messages to people with (or without) a certain skill/qualification (as above) can be filtered by group by entering 'everyone in abc with xyz' (replacing 'abc' with the group name, and 'xyz' with the skill/qualification). You can enter partial names of both the group and qualification (eg. 'north' for 'north melbourne' group, or 'fir' for 'first aid') to save time.
By role (in the 'Member positions/roles' area)
You can send a message to everyone whom has been assigned a role, by searching for 'All ', followed by starting to enter the role name - eg. if you have a role named "Supervisor", you can search for "All superv" which will give you the option to select "All Supervisor" as a recipient for your message
Everyone
Send a message to all people in the groups you have access to, by searching for 'Everyone'
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