Bar Chart with pre-set category
I have data in the following format:
|Person||Starting Point||Current Point|
|John||Unit 1||Unit 4|
|Jane||Unit 2||Unit 5|
|Joe||Unit 1||Unit 3|
|Sue||Unit 4||Unit 8|
I would like to create a bar chart showing all the units (50 of them) with the number of people who started in each unit and how many are currently in each unit. There will be some units with no one in them, but they need to appear anyway. I've gone around and around on how to do this and am not getting anywhere.