Yeah I guess it is kinda like. You have 1 btc in total, you give %10 share to 10 pairs. One pair has 0.1 btc volume, you use %20 of it to buy at level1, if it goes down to level 2 you use %30 more and if it goes down to level 3 you buy %50 more using up all remainder of 0.1 at level 3.

 If it goes up to level 1 you sell %20 and so forth like buying but selling part.

 Is that it gunthar?