I have a pie chart that uses one dimension. So, the output is yes (12%), no (11%), unresponsive (43%), and blank (32%). I want to have all those displayed, but I would also like to have another section that adds yes, no, and unresponsive together and have it called surveyed. I am fairly new to Tableau so not sure how to do this. If I can't do that, could I have a label added that adds the three up and is displayed as a label above pie chart? Any help would be greatly appreciated. Thanks!
Right click your response dimension and select Create > Group. Then you can bin certain responses together. Use the new grouped version of your dimension to make a second pie chart (or replace your first pie chart). If you post a sample TWBX workbook we can help more.