By default, a sale is assigned to the logged-in user.
You need to logout the active user and login with your credentials to be assigned the coming sales. More information to speed up the login process.
To reassign a sale to a different user, two options:
In 'Reports/End of day', go to the daily report of the sale. Then go to the 'Users' section and click on the double arrows icon in the header of the chart. A pop-up window opens. Select your sale and the new user to assign.
in the Apps tab of your account, install the 'Vendor switcher' application. In each sale, a 'Vendor switcher' button enables to switch the user assigned to the sale.