Adding a Reviewer to a Project is simple. First, navigate to the Project, and under the Reviewers section click the Manage button to launch the modal.:
With the modal launched, you can add a Reviewer from the drop down list (any user who has used Bonfire in the past from your organization will appear here) or you can invite a new user by typing in their email.
Remember to assign the reviewers to the appropriate Evaluation Groups to ensure they'll have access to the right Requested Information and Criteria.
You can also click on the Reviewer bulk invite button to add multiple Reviewers at once:
This will allow you to invite multiple Reviewers by entering multiple emails separated by spaces, commas, or new lines: