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If you create these mappings before your first inventory, all new people discovered by EmpowerID during the inventory process will be provisioned into EmpowerID Locations (instead of directory locations) and those EmpowerID Locations will be assigned to them as the "Location" portion of their Business Role and Location (BRL). For example, if you have a user named "Barney Smythe" in a London >> Contractors OU and a user named "ChrisMcClureChris McClure" in a London >> Employees OU and you map both of those London OUs to a single London location in EmpowerID, when you turn on your inventory the Location portion of the BRL for both Barney Smythe and Chris McClure would be the EmpowerID Location and not the AD OUs.
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