Yes, you can give access of your merchant dashboard to multiple sub users as well and you will have the authority to control what they can access.
Please follow below mentioned steps to give access to sub users
1. Login to merchant dashboard (Link)
2. Click on "Manage users and Roles" tab under settings.
3. Click on "Roles" then "create roles". Here you can create the specific roles as per your requirement.
4. Now click on "Users" and then "Add new users". Here you can give the access to users on their mobile number or email ID.