Access to Commerce tab in episerver

Hey,

I would like to create user accounts for the sales group which can have the full access to following view in episerver (Commerce part).

Commerce tab 
- Catalog 
- Marketing 
- Commerce Manger (every view excepts "Administration")

I tried with CommerceAdmins role but it doesn't work if the user is not WebAdmins or Administrators.

Which administer groups shall the sales be member of?

Do I need to create a new role for this scenario? If so, any suggestions?

Thanks, 

ChiChing