Train each person who will enter the premises on how to use the system, including bypassing the motion detector, what to do if an alarm occurs, and how to cancel an alarm.
Give each person who will enter the premises their own disarm code for the keypad and a passcode/password to give to the monitoring center if an accidental alarm occurs.
Call your alarm company and:
Tell them what days you will be gone
Tell them if anyone is authorized to be in your home while you are away
Update your emergency contact information, including who has keys to your home
Give them a number to reach you, preferably a cell phone number, should your alarm system activate while you are away