The profit and loss report is based on the accounting generated from the transaction categories, not the categories themselves. It's not possible to report directly on individual categories at this point.
The Profit & Loss tool has two modes: to view, including or excluding unconfirmed transactions. By default, the Profit & Loss excludes unconfirmed transactions. To change this and include unconfirmed transactions:
- Go to 'Reports' in the left-hand menu
- Select 'Include unconfirmed transactions'