Step 1: Make a form
Open this form and make a copy (File » Make a copy, you must be logged in).
Please do not change this form so other users can use it. Make your copy and close original form.
Now you can edit your Category and Task values.
There is only simple summary of responses in Google Drive.
So you can make your own better summary with data from new table of responses (Choose response » New spreadsheet).
Enter your form ID to next input field. Form ID you can find in address bar:
Example: https://docs.google.com/forms/d/ 1Bsv2Yb93JYs7gfGr_QZ3UE54syOrB6OGylmEamA_s7U /viewform
Step 2: Enter your form ID
Tip for Chrome users: You can use this app as a "desktop app". Simply make a shortcut (Tools » Create application shortcuts) to your desktop.