Responsive Self-Service Receiving Sandbox configuration update the Receiving icon to all the users

Summary: We want to implement the Responsible SS Receiving but when I configured the sandbox it updated the Receiving icon to all the procurement users. We want to move the solution by a group of users. No all the user at the same time. Is there any way to make change by specific users? Example, we want to start with procurement in East area, then Central Area, etc. Thanks

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