n order to do this, the Task you select must have Price Level's setup correctly in your pricebook inside of SuccessWare21 in the office.
On the Edit Invoice Item screen, scroll down to where it says "Price Level" as seen below.
Select the drop down where it says Standard Price to open up and see the other options, such as the one below:
Select the appropriate option for your situation. In this case we're going to select "After Hours" as seen below:
After clicking Done you will see the price change to match the appropriate level you have selected, as shown below:
If you have any questions on setting up Price Levels or making changes to your pricebook in general, please contact SuccessWare21's support team at 888-251-2779 for assistance.