I would look into to build in roles that are already configured in commerce.
Or potential create you own new role.
See section Controlling access to catalogs and categories in follwoing link. This will help to set permission for catalogs.
In addition, here's a link to the "Accesss Rights" topic in the Commerce 7.5 user guide:
Thanks for this - when I create a Commerce account and then click on the Create Account and save the details - I can't find the user account in the CMS > Admin Search Users seaction.
What I did notice is that in this blog http://webhelp.episerver.com/Commerce/7.5/#User%20Guide/IN_UserAccessRoles.htm the user is a CMSMembership Provider we use SQLServerMembership Provider. Should this make a difference?
If you want to stop an editor from accessing the Catalog UI completely, you can make sure him or her is not both Administrator/WebAdmin or CatalogManagers
If you want him or her to have access to only ONE catalog but not others, then you would need to upgrade to a much newer version. Catalog access right is added in 11.8 or later (can't remember exactly version)
Here is the Commerce 11.6 feature that Quan mentioned:
We are using Episerver 7.5. We were wondering if there is a way to Restrict CMS Editors to the Commerce section of the CMS such as editorial access to the commerce catalogue.
We have a catalog that we want a speific group to be able to edit but not have access to other catalogs.