How to refer to a certain Group Field

Hello and thank you in advance. I have a report that I am grouping a particular field in, in the report footer I have a text box that I need to suppress if a certain word shows in any of the group headers. To explain a little more, I am grouping by tracking information. In the group expert I select the grouped field and select options. I am sorting by specific order, each group has multiple tracking for each group header. So the groups displayed has 2 or more tracking fields. I have a total of 5 headings I need to see but not every stage has information so that group name is not showing up. SO I created a text box with the name of the groups and I need the text box, that is in the report footer, to show if a certain tracking name is missing from my groups.