On the 67 you could set a proximity alarm for a waypoint. Looks like this is gone unless you are in the Geocaching app.
We're happy to announce that the new 5.09 software version has been released, which addresses the missing option for Proximity Alarms. Please update your device and use the following steps to enable Proximity Alarms.
From the Main Menu:
1. Select Settings
2. Select Sounds and Vibration
3. Select Proximity Alarms
While your H1/H1i Plus can install updates wirelessly, you can also use Garmin Express to update. For info on updating, use this link: Updating the Software on Your GPSMAP H1