LollyPop - How do I change the screen the Home Button takes me to?

[RexBuck]

LollyPop just installed. Home button now takes me to a screen I don't want. Tried moving the screen I want to different positions - button still tied to same screen. How do I change that?

 

[Rukbat]

That depends on which launvher you're using which depends, if you haven't installed any, on which phone you're using.

 

[RexBuck]

Don't know what a launvher is so, I probably don't have this. Samsung Galaxy S4. Telus Mobility is my carrier.