Open the Chapel Falls app.
Tap on the Hamburger Menu ☰ in the top left corner.
Tap on Settings.
Tap on Notifications.
By default, all notification groups are enabled. To disable notifications for a certain group, simply tap the switch next to that group.
You can tell which groups have notifications enabled by seeing which switches are on and off.
That's it! You should now only be receiving notifications that are relevant to you!