Yes, it's possible to hide specific service items in a mutual timecard if they don't apply by simply marking those items inactive in your QuickBooks Online. Let me help you how this process works.
Here’s how to do it:
Open your QuickBooks Online.
Go to the Gear icon.
Select the Product & Services.
Choose the service item that you want to hide.
Click its dropdown under the Action thenMake inactive.
Once you’re done, go to QuickBooks Time and click Import in the QuickBooks preferences to sync your changes.