Hi Soumya..
Very straight question..
In which company are you working...
We can't fix R & R for any position just buy taking from a standard data...
Every company is unique ...
So what you can do is, you have to conduct JOB analysis..
Please tell in which company are you working..
I will send you one questionnaire call Position Information questionnaire (PIQ)..
GIve that questionnaire, And ask the position holder to fill the same..once you get back..
Contact me, i will tell you , What next..
If you have any dought please feel free to ask
Regards
Dev