JP1 Remotes

I guess objective is clear: I am in Home Theatre mode. I want to turn off TV (because I do not mind if my cable box or DVD player is ON). One option is: while turning off: I press TV->Power. While Turning on: TV->Power->Home Theatre. Or I can assign a Macro: M1 can be assigned to TV->Power->Home Theatre.

However, it is more intuitive to map Power button in HT mode to TV Power. So that, if I press Power in HT mode, it will turn off/on TV.

Can you help me how to do this?

Do you have a jp1 cable? If so, you could load the 8910 extender and setup the macro for Home_Theater to DEV_TV; SET_OTHER_KEYS.