How can we restrict Workstation access per operator or user?

Summary:

I have created 3 workstations. How can we restrict operator have access to only one workstation while doing production execution at workstation.

Winding Workstation - Operator Mike

Fabrication workstation - Operator Steve

Fitting Workstation - Operator John

Operator Steve - Should NOT check-in in Winding and Fitting Workstations. like wise Mike and John Should NOT check-in in other's work station.

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25A - Production execution at workstation.

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