set destination. and all will find u trips heading same directions only.
e.g. if you're in Midvalley and heading to Shah Alam, it might send u a trip from Bangsar South to PJ state, to Sunway, or Subang, upto Shah Alam.
But it will not send u a trip request from Bangsar South to KL city (opposite direction)
u can set this 2 x per day.

If you set this feature, but didnt get any rides, u still have 2x.

Once u get a matching trip, 1x is utilized. during 'Matching Trip' u might get few trips, but all still counted as 1x utilized, until u offline.

usually this feature is for part-timers, set home to office (1x) and office to home (1x). so u won't get job that goes opposite direction.

after u used 2x u won't be able to set destination until next day.