You can release the floating license instance for the current user in Local Service License Window on workstation A if you'd like to use Prinergy Tools on a different workstation B.

1. Start Adobe Illustrator.
2. From the Illustrator CC > Prinergy Tools License Manager menu, select Local Service License.
   
   
   

3. Click Release Floating License button, then you should be able to launch and use Prinergy Tools on another workstation.