Inside of Avigilon, you can check the status of the alarms as well as set them to arm. In order to check the status, go to Monitor > Intrusion Status
From there, you will be on the Panel page, which shows the status of the alarm panel.
You can also set the alarm to arm. To do that, go under the Area tab, check the area you'd like to have the alarm set for, and pick Delay Arm under the Master dropdown.
NOTE: if you are manually adjusting the alarm settings, you will need to disable your door schedule(s.) See Avigilon Day-to-day Scheduling