Here is how you can delete income added to the individual categories:

Step 1: Go to Bizli's main screen. 

Step 2: Click on "Expense" present at the bottom of the screen. 

Step 3: Click on "Income" present on top of the screen.

Step 4: Click on the category of your choice (example: Profit).

Step 5: Tap and hold on to the income amount that you want to delete.

Step 6: Click on "yes" to delete.