Here's how to create your Custom Group:
Dive into an operator's Brand Performance page
Click Create Report
Select Create Your Own Custom Group
Select the chains you want to include in your comparison
Give your group a name
Click Create Group
Then, put it to work in U.S. Chains:
Once your group is created, head over to the U.S. Chains tool to use it in a menu gap analysis:
Open a chain and navigate to the Menu tab at the top of the page (or scroll down to the Menu section)
Select BYO Gap Analysis
Click Let's Go
Your personally created Custom Groups will now appear in the list for you to select