You can provide a user with access to the E-Commerce by opening their profile and clicking on Edit - Account
In the E-Commerce section select the option to enable it.
If the person is an existing user click on : and insert the corresponding email address
If the person is a new user click on:
and provide a password (the username corresponds to the email address specified in the profile info).
To prevent the person to access the E-Commerce with the current credentials, just click on:
To notify a person via email about the activation of their E-Commerce profile, click on:
The email will provide the link to access the E-Commerce environment.
You can also associate more accounts with a single user. After logging-in the system will prompt the user to choose between two or more profiles (e.g. username: email@example.com can be associated with John Brow's profile and Mary Brown's profile. In this way two or more people share the same credentials but they still keep different E-Commerce profiles).