Hello! 

Yes you can only activate one machine. Ansys licenses are network / floating licenses which are available to other computers on your network. You can configure Opticstudio on your laptop to find the machine you activated.

https://support.zemax.com/hc/en-us/articles/6621344879123

If you need to use the license when not connected to your network you can also “borrow” it for up to 30 days at a time.

https://support.zemax.com/hc/en-us/articles/12705804352659-Borrowing-an-Ansys-network-license-for-offline-use-with-Zemax-applications-

Hello, thanks for the answer. But this does not solve my probelm. since I do not have a server available, but run the license locally on my computer, the linked manual does not help with my issue. How do I access the license on my computer fomr the leaptop while I am logged into my local network?

Hello!

I already addressed this - The machine you activated is effectively the server. You configure Opticstudio on your laptop to find the activated machine over the network. It’s usually just a matter of entering the other computer’s name into the settings. 

https://support.zemax.com/hc/en-us/articles/6621344879123