I want a formula that will enable me to count how many unique Groups per Account Manager, eg AM 2 has entered 4 groups, but only 2 are unique. I've used a COUNT formula to see how many times each Account Manager appears in Column A, and a COUNT(DISTINCT) formula to count the unique Groups in Column B, but how do I do this per Account Manager as well?
Account Manager | Group Name
AM 1 | Capeside High School
AM 2 | Rydell High School
AM 2 | Rydell High School
AM 3 | McKinley High School
AM 2 | Greendale Community College
AM 1 | Hogwarts School
AM 2 | Rydell High School
What I want to achieve from this data would look like this:
Account Manager | Unique Groups
AM 1 | 2
AM 2 | 2
AM 3 | 1