Official site is here
https://geocarenavigator.hrsa.gov/?page=Home
Most of user can't figure out even select 1 service area. Because in original UDS mapper, user click 1 zip code will automatically select that zip code. However user click 1 zip code, nothing happen, click multiple times triggers info window popup.
After free HRSA training, user realized they have to first click point tools then click the map to select 1 zip code.
When user continue click 2nd zip code, nothing happen again, which is wrong, original uds mapper allow user keep click zip code and do multiple select.
No user know this trick until you attend free training. The trick is you have to click point drawing tool again before you select 2nd zip code. Click point drawing tool 3rd time before you select 3rd zip code. This is horrible user experience, in original uds mapper, you just click 3 times on 3 zip code to select all 3 zip code.