In order to place Bet1 into the market 'early', i.e. before the required price is available, you can set the price trigger condition appropriately.
For example say you want to lay a selection at 2.50 but the current lay price is 3.00. You would set the Bet1 price to 2.50 and in order to put the bet into the market immediately you could set the price trigger to the Lay price having the range 2.50 to 3.50 say. The bet would be placed but it would not be matched until the market Lay price reduces to 2.50.
If on the other hand if the current lay price is 2.10 but you do not want to place the bet until the price is 2.50 then it cannot be placed early as doing so would result in an immediate match at 2.10.
So in this case you would have to set the Lay price trigger to 2.50 to 2.54 say and the BTX would not place the bet until the price reached this range.
