Taken from the Longhorn website:
ALL TEAMS USING THE SHEEPMOUNT FOOTBALL PITCHES MUST FILL OUT A "FACILITY HIRE FORM" BEFORE YOUR FIRST GAME OF THE SEASON AT THE SHEEPMOUNT. FORMS CAN BE OBTAINED FROM THE SHEEPMOUNT RECEPTION DESK. DO NOT WAIT UNTIL YOUR FIRST GAME AS THESE FORMS HAVE TO BE PROCESSED.