If you intend to put on live testimony other than the parties to the action,
you must provide written notice to the other party of the person you desire
to testify along with a brief summary of what they intend to testify about.
Failure to provide such notice will preclude you from calling any witnesses.
However, just because you list a witness does not guarantee that this
witness will actually testify as this decision rests on the judicial officer
making a determination of whether the information provided will be probative
in making a decision regarding custody and visitation. In addition, the
court could continue the matter for a later date (as time may be limited
on the scheduled hearing date) which likely result in temporary orders
being made pending the next court date.