To share collaborative access:
You can use collaborator accounts to give Shopify Partners (In this case, AiTrillion) access to your Shopify admin directly through their own Partner Dashboard or using the Shopify app. Collaborator permissions give Partners access to only the sections of your store that you want them to see. These accounts don't count towards your store's staff limit.
To share staff access:
You can add staff to your store so your staff/support team can complete tasks in your Shopify admin. You can give permissions to your staff to allow you to manage what your store’s staff can view, and what they can do in your Shopify admin or Shopify POS. The Shopify pricing plan that your store is on determines how many staff you can add, in addition to the store owner.
Note: By default, the staff member has full access to your admin. You can uncheck the staff has a full permissions checkbox to restrict this staff member’s permissions for accessing areas of the admin. Click here to read the instructions below on the Shopify support site.