AWEbase serves to connect contractors (such as yourself) with organizations (such as your clients). Just as you have your account, which you can use to maintain your portfolios and contact information, each organization has its own account. Organizations may have multiple staff members, so it's possible that you'll work with multiple people from the same organization over time.
By default, organizations can't communicate with you through AWEbase other than to invite you to connect with them. They can't see your portfolio or contact information. They can't even tell if you're already on AWEbase or not.
Once you accept their invitation, you are connected to that organization. They can now see your profile and portfolio, send you JobOpp Inquiries, and offer you Jobs.
You can be connected to any number of organizations.