CO-PA reports / forms configuration

Hello everybody,

I am new on CO module and I have been asked to create a report for profitability analysis.

I am using T-Code KE34 to create a form and T-Code KE31 to create a report bases but I am facing some issues regarding the layout of my form:

- I set the first column with all the items I want to analyse (costs and revenue items = characteristics) with some text rows. How could I set the size of this column? I would like to make it larger but I can't find any option.

- I would like to create a drill down structure: I create some formula rows to calculate some subtotals and totals and I would like to be able to hide the characteristics and make viewable just the subtotals or totals and vice versa. Is that possible?

Thanks !