There are 10 types of references in POBITS.
In the Relatives Investigative Area:
In the References Investigative Area:
In the Employment Investigative Area:
In the Residence Investigative Area:
There are four ways to invite a reference:
Note that when you use method #1, POBITS will always invite the reference. With any of the other options, POBITS only invites those that have not been previously invited. You can see the invited date associated with each reference. If a date is present, no invite is sent except when using option #1.
So you should note that you can use options 2, 3, or 4 anytime with no concern that you will be re-inviting someone.