How do you change a armour set to armour pieces on runescape?

You Go Too The Grand Extaing And Select "sets"

At grand exchange! Right click on clerk and choose sets. Then right click on the armour and click on exchange set. Hope it helped.

go to the grand exchange clerk right click her/him click "Sets grand exchange clerk" then right click your set and click "exchange *example*" then you get your items from it =) if you want it back as...

You open the set by exchanging the components of the set through a clerk at the Grand Exchange.

You simply right-click the Grand Exchange clerk, then click sets, then on the box set, right click then click exchange.