If you have many staff, with many Shopify stores, then it might be worth looking into creating a Shopify Partners account, and then adding the staff members to the partner account, rather than to individual stores.
https://help.shopify.com/en/partners/dashboard/account-access
It might help with consolidating and managing which stores the staff member has access to, all from one place. I’m not 100% sure which kind of data you’d have access to doing it this way, but it still might be worth testing out.