...
This is a straightforward option for smaller deployments or scenarios where users or IT administrators can configure enroll devices individually.
Steps:
...
Install the Intune Company Portal app
Intune Company Portal is the app that lets you, as an employee or student in your organization, securely access your apps, data and resources.
https://learn.microsoft.com/en-us/mem/intune/user-help/sign-in-to-the-company-portal
...