Hi Brenda and welcome to JustAnswer,
I can tell you how to put the alarm in valet mode, which will disable the alarm.
The valet switch is usually located in the lower left kickpanel. Start off by turning the key on, then flip the valet switch the other way. If done correctly, the alarm LED will light up solid. Turn the key off.
The lower left kick panel is where the left foot would be resting. There's a panel next to the left foot area. Look for a toggle switch in that area.