Ok...I've given up trying to find a way to access the screen that enables me to change combat styles...please don't tell me to press F4 as this only brings up the Launchpad on Mac...is this common to other Mac users???..more importantly WHAT IS JAGEX DOING ABOUT THIS!!!!...I pay to play this game and this is blatant thievery...Mac users money is the same as everyones....wake up Jagex!!!

 

 

Change it there. #thievery 

Or like click the fourth button on that one 8-button bar.

Yeah as pointed out rather than getting into blaming jagex try and actually use your eyes and search

 

f1-f7 are by default set to be the hotkey shortcuts for 7 of the 8 menus (esc being the 8th) but they are by no means the only way to access them, and with only 8 menus it does not take a huge amount of time to find what you are looking for.

 

In this case the settings are in the powers menu, accessed via the 4 glowing orbs button.

Equally via the settings menu you can quite easily access controls settings and change the hotkeys if they do not work for you; personally I am on a mac and have had no problem with the f-keys functioning as intended whilst in the runescape app; as long as it has the focus the f keys should work just fine.

Yup, the F buttons work by default, but the basic way is this:

 

You click on THIS button on your main menu bar:

 

Which opens up the following menu:

 

 

Where the YELLOW are shows were you can change your combat exp gains and the RED menus allow you to choose the same thing for other combat styles. 

 

These settings can be changed at ANY time, no matter what you have equipped. And they will be saved for whenever you go into combat next, regardless of style.

You can also go to  apple-> system preferences -> keyboard.  Click on the keyboard tab and check the box that says "Use all F1, F2, etc. keys as standard function keys.