Adds a user to a region.

Adds an existing user to a region. You specify the region to which you want to add the user in the `designatedRegion` request body. To add a user to multiple regions, you must make this call separately for each region. **Note:** The `accessLevel` of the user that you are adding must be `region`. ## Permissions You must have at least one of the following permissions set to **true,** depending on the level of the user that you want to add or remove: - `canManageMemberLowerAccessLevel`: Use...