Your whole hiring team can work in the same account. There are no seat limits and no per-user charge, so adding a colleague costs nothing.
Adding a colleague
Go to the account menu, then Team. Enter their email address and send the invite. They get an email with a secure link that brings them straight into your workspace. They do not need an account first and they do not choose a password.

What they can see
Everyone on the team sees every assessment, candidate and result. There is no per-assessment visibility and no hidden pipeline. If a colleague should not see a set of candidates, they should not be on the account.
That is worth saying plainly before you invite people, because it affects who you invite. See what your team can see.
Who should be on your team
The people who build assessments and read reports. Hiring managers who only ever see one shortlist are often better served by a downloaded report, which you can send them without giving them the whole account.
Notifications are personal
Each person chooses their own email notifications: when a candidate completes an assessment, when someone registers, a weekly summary, and product updates. Adding a colleague does not subscribe them to your settings. See email notifications.
Removing a colleague
Removing a member revokes their access. Work they did stays on the account: assessments they built, decisions they recorded and notes they left are all kept. See add and remove team members.