Buy/Sell-Buttons on MT4-Chart and partial closing of positions - open to bidding

Hi Jack, I know you from last year with another project, maybe you can help me to programm an EA as MT4 One Click-Trading addon with similar position handling like MT5. On the chart there should be 4 blocks: Buy Buy Buy Buy 0.25 0.5 0.75 1.0 Sell Sell Sell Sell Buy and Sell are buttons, the numbers are the lots, that can change in the ea-settings. The reason is, if I trade, I want as little as possible open positions. E.G. 4 clicks 1.) Buy 0,75 2.) Buy 0,50 3.) Sell 0,25 4.) Sell 0,50 Net Position 0,5 Lots. In MT5 I have only one line for each symbol. Maybe you can write the condition of the buttons, that the sell 0,25 is a partial close of existing buy-positions, so that we dont have 4 positions in MT4 open. After the 4 clicks it should be only 1 position with 0.5 left. In the Chart below the button-fields there should appear only one line with the (net-)position [not the lines from the trading tab, there are more positions] and the p&L. Can programm it? Warm Regards Christian