Huddle Monkey allows you to add a temporary user by setting a date on the user account when it will be automatically deleted. This may be useful if you have a one time event that you need to train or communicate volunteers for but then no longer need the users to have access to Huddle Monkey for your ogranization once the event is done.
Simply create users individually or bulk import users and set the Auto Delete On property to the date their accounts are no longer needed. The accounts are automatically deleted, freeing up your user limit if your plan limits the number of users that can be created;