remote control problem

My friend has a dreambox 500s and he accidently did something that he forgot and that has affected the yellow button on his remote control. Instead of viewing his peers and cards when pressing the yellow button, when he presses the yellow button it is going on RAI 1. Any ideas on how can he fix the problem.

Thanks

yes. go
Blue button,
5)Quickbutton settings,
Plugin by name

then choose which plugin you want the yellow button to go directly too.
You can also go to clock, a game or straight to a channel etc.. by choosing from the menu instead of plugin by name.