You may need to update an expense after it has been posted.
Update an expense
Go to finance
Click on expense
Find the expense on the appropriate day
Hover over the expense and click on the gear that appears at the end of the row
Click on Update
Make the appropriate changes
Click "Update Expenses"
Once a payment has been made against the expense, you will no longer be able to update it. You can still fine tune to make minor adjustments
Finetune expense
Go to finance
Click on expense
Find the expense on the appropriate day
Hover over the expense and click on the gear that appears at the end of the row
Click on Finetune
Make the appropriate changes
Click "Finetune Expense"