Final answer:
Switching an instance to a License Slave requires a command relevant to the software's licensing system, which involves configuring the instance to rely on another server for license validation.
Step-by-step explanation:
The command used to switch an instance to a License Slave depends on the specific software or licensing system in question. In general, such a change is made in a multi-user software environment, where one machine (the License Slave) relies on another (the License Master) for validation of software licensing. This setup is common in network licensing arrangements where multiple users need to access software under a limited number of shared licenses. The exact command can vary, but it typically involves configuration files or license management tools where you specify the server to act as a slave. It's important to consult the documentation for the specific software to find the precise command.