Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
Mrunali Barde
Ansys Employee

Hello dinhan0394 , 

You can create an option file on the license server end to restrict the user/group's license usage. 
Reference: /knowledge/forums/topic/how-to-use-a-flexlm-options-file/


I hope this helps, 
Mrunali.

[bingo_chatbox]