Epson 7850p - Manual (Page 160)

160 Managing Projectors
5. Click Add . The IP address appears in the list of registered
printers, and the searching icon appears beside it. If the
projector is found, its name appears in the projector list.
6. Repeat steps 4 and 5 for each projector you want to add to the
group.
7. Click OK to save the projectors as a group. When you see a
confirmation message, click Yes .
8. Click Close to close the Advanced screen.
9. Click OK to close the Extension screen, then close
NS Connection.
note
To remove a projector from
the group, select it from the
projector list and click
Delete .