Uninstall from old PC- Reinstall in new

I'm looking for any kind soul who might give me somme advice.

 

I'm retiring an old laptop. I'll probably give it away to someone. I want to unisntall my NIS 11 so I can use the license to install in a new one. I havean up to date subscription for 3 PCs- All 3 in use, including this laptop

 

Thanks for any help or sugestions