On the Vaccine Management and Operator Management screen we'll have a new button.

Users that are assigned to all locations will see the 'All Locations' option,
We can enable it if we want to associate the entity with all of the locations \ disable this option if we want to associate only a specific location to the entity-

A user that is associated only with some locations will not have this button-

In order to associate another location with the vaccine/operator: