Signing up for work from the employee profile
To enroll one specific employee, go to their profile and select the Onboarding tab.

Here you can see all active onboardings. Select the onboarding you want to enroll the employee in and click the Enroll button.

A warning will appear, which you must confirm.

If you now go back to the Onboarding tab on the employee's profile, you will see that they are already enrolled and you can send them an onboarding email.
