If you want the employees to enter receipts in QuickBooks Online, you'll have to add them as regular users so they can send the receipts to the registered email address set up on the Receipts tab. Employees can Email the receipts to your custom email address @qbodocs.com.
To add users in QuickBooks Online:
Click on the Settings icon.
Click on Manage users.
Click on Add user, and select Standard user.
Click on Next, and click on Limited.
Click on Next and follow the prompts.
You can check the links below on how to set up regular users and receipt capture in QuickBooks: