Lay all but a certain number of runners

[Colchester]

I am new to Guardian. Is there a way I can write a single rule to, say, lay all but the top two in the market of a race at Betfair SP?

[MemphisFlash]

just add a condition either back or lay (whatever your doing) and say Back Price is greater than back price of 2nd fav plus X ticks/odds

[Colchester]

Thanks, appreciate your input and wisdom.