You can create a default "No Charge" item, which can be applied to time entries. It will automatically set the hourly rate to $0, while the time entry will still appear on the invoice. 

To apply a "No Charge" time entry, follow these simple steps:

1) Click on "More", and select "Items", or click here.

2) Select "New Item".

3) Title this item as "No Charge" with a "Price" of $0.

4) Switch "Use Item Price Instead Of Hourly Rate?" to "Yes", and click "Save".

What Happens Now? 

Whenever you need to create a time entry with no charge, make sure to select the "No Charge" item. These time entries will still be billable, but they won't add to the total balance due. 

Enjoy!

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