1. After your expense is created, click the blue "Add" link under the Receipts column.
View of expense not yet in a report. 
View of expense in a report. 
2. You are given the option to "Choose Unattached Receipt" or "Upload."
There are two ways to add a Receipt to an expense on your computer.
A. Select a Receipt from your Unattached Receipts page.
1. Click the button "Choose Unattached Receipt" and click on the receipt you want added. Then click on the "Select" button.
B. Upload a Receipt image from your computer.
1. Click the "Upload" button and select an image from your computer then click "Ok.
3. After your receipt is attached you will see a yellow file folder under the Receipts column.
For further assistance, contact support@trinetcloud.com