Really Dumb Question about Custom Fuctions on 5Dmk2

[rgrebby]

How do I do them?

Ive looked through the manual and I cant find where it says how to actually use them. I can change what each one does, but how do I do it?

Thanks

 

[susie]

Pages 172 to 185 in the manual tell you how to set them and what each one is for

 

[rgrebby]

Pages 172 to 185 in the manual tell you how to set them and what each one is for

Yeah I managed to find that but how do I actually use them?

Am I just being really stupid?

Ive had a long few days, but are they like custom setting for the camera?
I was kinda looking for a quick way to change the exposure balance..