You need to install the jamf protect agent on the computer, and the agent can be downloaded on the jamf protect page under the administrator tab,

You can have a look at the deployment guide available here: https://docs.jamf.com/jamf-protect/documentation/Jamf_Protect_Deployment.html

There's also walk-though videos available at: https://trainingcatalog.jamf.com/page/jamf-protect