Sure! To make certain members of you team "Creators" and not directly "Publishers", please do the following:
- Go to your account settings -> Collaborate.
- Hover over the relevant team member and wait for the green pencil icon to appear.
- Click the icon and select "User Level Access".
- You can then choose what profiles you'd like to make the user a "Creator" or "Publisher" for or if you'd like to "Disable" their access completely.