No until the spread or both positions are gotten into, you don't get the margin benefit of a calendar spread. The best way to trade calendar spreads is by using the spread order or directly trade the spread contracts. Check this link on spread orders:
thanks Nithin, I guess i’ll have to use volume up to my available limit - > leg into calendar (both legs) -> have calendar margin benefit kick in and then use the remainder of margin to enter more calendar.
Nithin : further question : I enter Calendar spread at once and used my margin to full extent (margin benefit). now while exiting the spread, if i leg out - and particularly, the buy leg is sold first - i’l be left with the SELL leg and that too with too many volumes for my margin money. How will your RMS treat this? Even if i were to close the SELL leg the same day as BUY leg (but different time frames).
thanks.