If you are sending regular messages to the same group of recipients, you can save time by placing them into a member group.
Here's how you would create a member group.
Once the group has been created, it will appear as a filter when selecting members to send a message to.
To use a member group filter: on the ‘Select Members’ overlay, click into the ‘Select filter type’ drop-down underneath the ‘Add a filter’ label on the right-hand side and select ‘Member Groups’ from the list.
Then, click into the ‘All selected’ drop-down for member groups, untick ‘[All]’ and tick the member group you wish to view.
Tick the members you wish to send the message to from the group and click the green ‘Done’ button.