Holders of the copyright on creative works have the absolute power to license others to make specific uses of their work. A copyright holder may, for example, declare the work to be in the public domain, and relinquish copyright altogether Or, the copyright holder can grant specific rights to specific individuals, groups or corporations.
Creative Commons (https://creativecommons.org/) is an international non-profit organization that has created legal language to allow authors/creators to grant slected rights to users automatically, while retaining your copyright.
The Creative Commons website lets you select the nation in which you have copyright, then the permissions you want to grant, and generates a lecense you can attach to your copyrighted work.