sell partial lots

I am new to MT4 and I think I am missing the forest for the trees. Can some one please tell me if I can close a part of my active order. eg: if I have 4 lots active but only want to sell 2 lots, can and how do I do it. It is easy on my other platform (dealbook 360), but I think I am missing the obvious with MT4.
Help please.

Much appreciated.

new platforms can be fun. once the trade is open, double click it on the trade tab under your terminal window. When it opens change the volume to 2 and then click the close button. should work for most brokers.

Thank you so much. I knew it would be something simple.
much appreciated.

You can also do that in an EA if you want...