Thanks for all the replies and the willingness to help!
Let me upload the example here.
The format I want to show in this overlapping bar chart is:
1. From left to right: Forecast > Forecast (Last Month) > Plan
2. Overlapping: from left to right also, which means Forecast > Forecast (Last Month) > Plan
As Ismail said, the very last expression, which is the right one always overlaps the left ones.
Thanks Ismail for the suggestion. I have also tried that before but I think users will still be distracted but that transparency.
Since we used to read data and charts from left to right, I hope the current Forecast (which is supposed the most important information) stands out by putting it at the left but not overlapping by other charts. I hope there is some trick way I can do that