I have already contacted Sketchup support, and received the following:
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“Thanks for your note. Currently, there is not a way to control access to individual seats of a license, disable the license checkout function, see who is using the seats, or how many seats are in use. We recognize the need for more admin controls. We appreciate your feedback and hope to integrate more features and functionality to our licensing system in the futureThere is a post on our SketchUp Community Forum that you might be interested in reading and contributing to: License management - #2 by SketchUpTeam”
When will this capability be available to us admins?