Add delay to presence?

Your post was a little confusing because you seem to have mixed up smart home monitor armed status and modes. These are actually two different things.
The following thread should clear up that confusion (this is a clickable link)

In either case, The usual way would be to use webcore and have it change the smart home monitor armed status (or the Mode, or both) with presence +30 seconds. It’s a little complicated to set up, but there are many community members who will be glad to help you. :sunglasses:

Another alternative which may be available to you, depending on the specific router that you are using, is to have your phone counted as present when it connects to your own Wi-Fi rather than using GPS. This would likely give you a smaller detection zone. See the following thread for more details on this option: