Permissions + roles

• Switching the module on and entering the Measurement ID needs a staff account that can manage settings (the store owner and administrators can). Staff without it do not see Settings → Modules.
• Viewing GA4 reports happens in Google Analytics, not CartWhizz. Give people access in GA4 under Admin → Property access management. They do not need a CartWhizz account for that.
• Shoppers see nothing different, apart from the cookie banner if you use Cookie Consent.
• Marketplace sellers cannot add their own GA4 ID. One GA4 property covers the whole store, including sellers' products.

Tip: give your marketing agency Viewer or Analyst access in GA4 rather than a CartWhizz staff login.