Mudrex does not currently support position sizing in any way. Whenever an order is placed, 100% of the capital allocated is used up.
EG: If you deploy a strategy live with 0.1BTC on say BTC/ETH then when the buy event gets triggered Mudrex will buy 0.1BTC worth of ETH at that given buy price.
Mudrex makes sure that you maximize your profits and hence any profits are reinvested in the strategy by default.
EG: Let's say deploy a strategy live with 0.1BTC on BTC/ETH and after a few trades the strategy made 10% profits taking your overall balance to 0.11 BTC. Now, when the buy event gets triggered Mudrex will buy 0.11BTC worth of ETH at that given Buy Price and not 0.1 BTC worth. All profits and losses are always reinvested.