To manage Chrome devices across your organization, you need a license for each device you want to manage. The license gives you access to device settings in the Google Admin console.
Chrome device management license
A Chrome device management license is used to configure settings and enforce policies for a specific Chrome device. It gives you access to device settings that let you control user access, customize features, configure network access, and more. You can purchase this license annually or for the life of the device.License subscriptions
Perpetual—A perpetual subscription is only available for Chrome device management licenses and covers the life of the device it's enrolled to. If you encounter a hardware issue and need to replace a device with a perpetual license, you can transfer the license to another device of the same model (or equivalent manufacturer-provided replacement). However, you can't transfer the license from one device model to another, or to a device in another domain. Transfers are audited.
