After being invited to your enlist account, other people at the company may need access to work with specific job listings. Here's how you can add a user to a job:
Go to the job that you want to add users.
On the top right, you will find a link for "Job Setup". Visit that link, then look for the "Users" link in the left sidebar.
Here, you can see who already has access to the job. You can click the "Add or remove" button to add or remove people from the job.
Other than the hiring manager, the person responsible for that stage will also get a notification when a candidate applies.