When you code a macro you don't press a Device button before the P button. The key you want the macro put On is the first key pressed after the 9*9*5** Once the macro is programmed, you execute the macro simply by pressing the button you put the macro on.

You can put a macro on any button you want. I would start with the 1S-4S buttons.

Here is my macro for the Power button to power on all of my equipment and set it up to watch cbl/sat:
SETUP *--** 9*9*5** POWER * RCVR * POWER * 7 * TV * POWER * VCR * POWER * CBL/SAT * POWER * SETUP *--**