I have 2 water sensors by ST on a HE dashboard. The sensors added OK and they read OK when dry and wet. But a ran a test and wet the sensors but didn't get a notification. The template I used said "water" should I use a different template?
Also want to set them on their own dashboard, which I did but there's no disarm/arm tile. How do I add a arm/disarm tile
You need to set that up. You can do it via the built in Hubitat Safety Monitor app, or there are many 3rd party apps that can do it as well.
Hubitat is more "hands on" where you will need to customize each settings as you want it. It will not "auto configure" things such as this. They are not hard to add, and if you have any trouble feel free to post and there are many here to help.