You can edit an approval in-progress which you already submitted and save the changes.
| Note: An approval can be edited while it’s in-progress. You cannot replace reviewers who already made their decisions. | 
- Among the approvals you submitted, click on the approval you want to edit.
 - Go to the Process tab.
 - Click MoreEdit this process .
 - (Optional) Edit the contents and add/remove reviewers.
 - (Optional) Add/remove references or attachments.
 - Click Save.