Graph and Charts in OneStream

Hello I have a query regarding Graph editing in OneStream

I wanted to know how we can edit the graph in OS. Eg: The client has a waterfall chart built for the EBIDTA and they have the previous 2 years comparison as well. However the October and Nov month shall start from the start point 0 similar to Sept Month whereas currently they start where the previous moth ends. Also the colour of the bar for Oct and Nov shall be Blue similar to Sept and Dec month