For your Sesami team members to log in to your account, you will need to create a staff login for them on your Shopify account.
You can check out this handy Shopify article about managing your staff members here: https://help.shopify.com/en/manual/your-account/staff-accounts/create-staff-accounts#give-staff-permissions-to-your-store
We are glad to share that we are currently working on the Sesami Portal with Multi-access > Merchant, Location Manager, Team member
We still don't have a date set to release, but it is in the oven!
Feel free to add your vote for this feature on our "Feature Request board". We will email you once it is ready to use it!