In order to receive the notifications of your preference, select the following:
Once logged in, This will result in the My Bids area being displayed. Select Manage Account.
Selecting the Main (Parent Category) will select all sub Categories in the group.
To remove all categories, select the main Category check box.
Select the sub Categories of your choice.
Continue down the list with your selections.
You may receive email notifications that you did not select. This is due to the Organization, selecting all categories rather than the sub categories required for the bid.