You cannot restrict who can get a commuter license. However, you can restrict the percentage of commuter licenses issued. You can reserve license to user groups but not limit it to a commuter license type. You can use the system variable with the option -com.
Commuter licensing uses the same license tokens as other network licenses. To ensure that commuters do not use all of the license, set the -com option of the LSERVOPTS environmental variable to the percentage of license tokens you want to be used for commuter licensing. Once the percentage of tokens has been reached, no more commuter tokens will be issued until others are returned.