Absolutely. When a user logs in to the xTupleCommerce site, they are redirected to their My Account page. If they are already logged in and have started navigating to other content, they can click the My Account link at the top of the window.
Once they are on their My Account page, they can select the Edit tab to update their primary contact information.
If they want to manage their Shipping Addresses, they can select the Shipping Addresses tab within their My Account page. From there, they can add a new shipping address or update an existing shipping address.
Note: Customers are not able to update their billing address in their My Account page. That will need to be done in the ERP.