You can add commissions data within each invoice directly and edit this info via the invoice, or through the Commissions & Sales Report. 

When adding a new invoice item, click on the pencil icon to the right of that item to open the details:

Once opened, click on the Commission tab to enter your commission amounts, dates, and splits

The information you entered on the invoice above will appear in the Details tab of the Commissions & Sales report.

Any data paired with a blue edit icon (which looks like a pencil) can be edited directly from this report and will be reflected on the invoice after being updated here:

To see more about this, check out our guide covering the full Commission & Sales Report here.