I just received this message from BaseMaps;
It sounds like this is referring to our Remote Markers. If you have a compatible Sig Sauer or Leica rangefinder, it can be connected via Bluetooth to drop remote markers. Alternatively, you can manually enter the range if you don't have a Bluetooth-connected rangefinder.
To access this, tap Tools > Remote Marker. Enter the range (or range on the Bluetooth-connected device) and you will see the NavCam, where you can get a visual of the object you are ranging, then tap Set; the NavCam was just added earlier this year, so the YouTube video may have been created before that feature was added. You can also return to the map by tapping the Map icon to add the marker using the compass and satellite imagery. Once you set the marker, you can adjust it if needed, then Save.
When you're in XDR Navigation mode, you cannot add a marker on the map along the distance line.
The Remote Marker feature requires a Pro subscription.
Sincerely,
BaseMap Support Team