Ps4 – Designating targets on BF4 / PS4

You can get the binoculars by scrolling down or holding down Q. You should then be able to zoom using T.

It is done by working with your squads. Squad points are made when healing a squad mate, being a spawn point, capping a designated flag, etc.

If you lone wolf, your squad will take more time unlocking them. Same goes if your squad leader does not give orders. Only the squad part of the points will go toward your unlocks. So let's say you get a squad savior, you get 25 for the savior and 25 for the squad part, only 25 points will go in your perk progress.

You lose your progress toward your next level and a level when you wipe. If you are alone, you will wipe everytime you die.

From what I read, the upgrades are in individual, however, as I said before, they require squad play to unlock.

Level cap explaining it

All the upgrades

DICE explanation