Overview & background
You can add Account Managers or Account Users to your account so that others are associated with your Pro, Business, or Enterprise plan. Please reference the differences between permission levels in this article. Here are the steps:
Login on www.fieldwire.com and head to the People tab.
Click Invite, and "To the account."
Add the email addresses of the people you want to add as an Account Managers or Account Users.
You're all set!
Tutorial Video on Account Management
Managing your Team in Fieldwire