Every guide for GalleryID. Each topic says who it is for and what it needs.
Integrations
Connect one or more PhotoShelter accounts so photos can be pushed across. Photos upload by FTP, which has no rate limits, and are then organized into galleries through the PhotoShelter API.
Click Test Connection
Leave the API key showing its dots and the password fields blank to keep what is stored. Passwords cannot be cleared from this screen, only replaced.