From what i have researched online, i found out that,
1) first we have to ensure that the basic frame of the dish is set at 90 degree.
2) Then we have to set the elevation using the scale provided at the back of the dish. Elevation is the amount of tilt the dish has to take vertically.
3) then we have to set the LNB polarisation which is the Skew angle accuracy. The LNB holding bracket also has a frame with scale to set the accurate values.
4) Finally the Dish peaking. This is done with the azimuth angle. Try swinging the dish left and right. you will notice two points on either side where the signal completely drops. Now you have to find the exact center location between these two points and lock the dish.
The values of Elevation, LNB skew/polarisation, and azimuth are location and satellite dependent so you will have to check these values online for your place with latitude and longitude values.
Experts kindly provide your inputs as i am a novice.