CO-PA reports / forms configuration

Question

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 !

Answer 1

Thank you Surya for your answer.
Actually I used the wrong word in my first question:
I set the first colum with all the items I want to analyse (costs and revenues items = characteristics value fields.".
Example:
Value fields
Actual
Plan
Revenue
300
450
       Revenue from services
100
150
       Revenue from goods sales
200
300
Costs
100
85
       Salaries
40
30
       Vendors materials
60
55
I would like to make the column value field longer.
Sorry for the confused explanation