Post the IR code data that was learned for these commands. It is likely that these can be edited to achieve what you desire. The other solution is to see the FAQ about the press and hold under learning tips.

If you cannot see the code data then you need to enable 'developer' mode in the software.

There is a utility called ProntoUtil(s) (I think) that Daniel Tonks wrote/posted long ago that will do this. (search the files section)