As a user, you could still edit an already submitted expense by using Recall button.
NOTE: This can only happen if the expense hasn't been approved yet. Also, the recall function is configurable, depending on your company's preference.
1. Check the expense status.
Go to Expenses > All, now your submitted expenses will also appear. You can also use the filter option on the right side, if needed. Filter the search > Set Status to Submitted.
2. Select the submitted expense > Choose Actions > Click Recall.
Or
Open the expense in question > Click Recall button
3. A banner with "The expense has been successfully recalled" will appear on the top of the page and the expense will be tagged as Recalled.
4. Recalled expense/s will then be available under the "TO DO" list. Edit the necessary information.
5. Click Save or Re-submit.