Location Sharing Map: Allow Selection of Custom Basemap Shared to a Group

[Peters_Amy]

In Survey123 (ArcGIS Online), my field users need to see their real-time tracks overlaid with project areas where they are allowed (or restricted) from going. I would like to be able to give them a custom project map in the basemap icon selector inside the Location Sharing Map screen. Currently, only basemaps that are shared by an administrator of the organization are there but I need a map that can only be shared with a group, one that the entire organization should not see.

[Agata]

Hello, there is a way to add a custom basemap or web map, we have a few for our users, this is a good video to get you started: https://www.youtube.com/watch?v=rGYT4sk6M0I

[Peters_Amy]

Thank you but I'm actually referring to the maps that are available in the Location Sharing map that is the screen just OUTSIDE of the survey. I need a basemap in there that is not shared to the org, but only shared to one of my groups. My field users need to see their tracks over a custom project map that is internal to one ArcGIS Online group.