if stuck or seized, we fix that first.
clean it? then grease it with "brake" grease.
then adjust it by the book.
"how" has many connotations.
or a method.
on many cars, its only inspected, or reset , and are automatic.
the fsm covers this.
you didnt say what you were doing to get there.
ill guess that. so the book shows, removing them.
and cleaning the the adjuster,then when free, and clean
screw it back in , and as a last step.
adjust it until the shoes , the drum, and then at that star adjuster
back it off 4 or 5 clicks.
some swifts work differerent in your country than ours.
try posting a photo of yours, so other can see, what TYPE
some have a ratchet adjuster, and the method is totally different on those.
generic photo. talking #6 are you?
number 6 is a STAR adjuster, like use in olden days.
there is rubber plug on backing plate to reach it. using a tool called a brake spoon (or DYI a screwdrive (harder to use)
apples and oranges difff. the below is suz, auto adjuster
best practice for diy, buy the FSM book and read the brake page
first, and photograph the parts be for taking them off. (win)