@Black Shadow
As you can see, it's modeled to work with the default battle system. And it should work with other BS that follow the same mechanics (from a code point of view).
Here, from that screen you posted, it looks like Cogwheels RTAB doesn't use @active_battler... not in the same way the default BS does, at least.
I will try and see if something can be modified in a general way, so that it doesn't compromise compatibility with the default BS, or a patch is needed.
Stay tuned.
As a side note, i suggest Individual Battle Commands to be put after any Custom Battle System script.
@Valcrist
That SHIFT feature is a pain... It's going to be a lot of troubles with many custom menu systems, so i didn't consider to include it in this script. Ask you preferred Menu Systems Scripter for a little patch

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EDIT: just added a Cogwheels RTAB compatible version.