Here is what you do to disable the categories you don't want to run:
* On the Desktop Manager click on "Backups". You'll see the list of all the backups running on your machine.
* Double click on each category on the list and on the "Backup Details" window and un-check the "Automate" checkbox (this will disable the category).
* Click "OK". Please do this for each category you don't want to run.