not at all, rohit...
once factor is fixed at 10:15, we stick with it THROUGHOUT THE DAY...
SL for all orders is set at 1%, as per theory.
if modifed sell order level COMES FIRST before such 1% SL, then such sell level becomes SAR
for eg, as of now, SL for longs = 2910.60
and sell is at 2904.90
assume that sell is at 2912.90.... then, obviously, it comes before 2910.60 - so, we make 2912.90 as SAR (stop-and-reverse) level...
give such quantity's order that it will close previous long position, and make fresh new short position with enhanced qty.
say, if long is of 1 lot, then SAR should be for 3 lots - 1 lot closes long, 2 lots makes fresh short