Help with editing sangmane's scripts

I would like to update a wonderful set of scripts provided by sangmane here.

This script allows one to choose between various entries and enter price, SL and TP using visual lines. Here is what I would like to add:

1. Ability to enter 2 trades
2. Separate lot sizes, SLs and TPs for each trade
3. Separate trade comment for each trade.
4. Ability to turn off TP and SL.

Ideally, I would like these functions to be built into the on screen order entry module. Please let me know if you can help. Thanks.

Why not attach the script to two different charts?

That's a thought. But I would like the orders to be entered simultaneously. It would take too much time to enter using separate charts, IMHO.

Or can someone help me figure out how to make the changes? I would like to make separate ones. Do I need to access the dll file?