In Quick Shopping Cart, you can create various roles for members and assign them access to specified areas within the Quick Shopping Cart manager.
The role of Administrator is in your list of roles by default. This role has full permission and access to manage your storefront. If you want to limit some of these access rights, you can create a separate role, and then assign that role to members to whom you want to grant specific access.
Be sure to inform your members of your store URL and the email address and password you entered for their accounts.