Hi Courtney,
The Gold plan allows for 4 users and one admin. A User is someone who can activate in5 within InDesign. An Admin is someone who can access the online account, create users, remotely deactivate users, make account changes, view invoices, etc. Please go to https://ajarproductions.com/pages/products/in5/purchase.php#plan_compare_grid and you will be able to view plan comparisons and pricing.
Best,
Caitlin