The only time you would add staff to a poster is if you have the Contact Form set up within the poster to say who that should go to.
1. Click ‘Posters’ on Event Settings Panel
2. Click ‘Staff’

3.Click ‘Add New’

4. Use the ‘Search For’ tool to find a user
5. Set the following:
a. Type (Attendees, Admins, Both)
b. Limit (20, 50, 100, 250 rows)
6. After a user is selected, set the following attributes:
a. Is A Poster Administrator
b. Allow Access To Rep Tools
c. Hide From Staff List
d. Notify On Contact Us Request
7. Click ‘Save’