How can I transfer the license

Dear Sir,

Could you please tell me how can I transfer the license of a (non profit) single End Product to “third party”?

Is there any action to be done or I simply give to the “third party” the Item Purchase Code?

Have you made use of the item you bought or will this be the first time it is used?
If it hasn’t been used then I’m pretty sure you can give the license over to them, provided that they still make use of the item according to what is stated in the license.