When total station is sighted to the target, which of the operation acts first?

When total station is sighted to the target, which of the operation acts first? Correct Answer Rotation of optical axis

At the time of sighting the instrument towards the target, first step involves the rotation of the instrument’s optical axis from the instrument north in horizontal plane.

Related Questions

Statements: Some target are chasable. All chasable are possible. Some possible are win. Conclusion: I. No target are win. II. Some win are target. III. Some possible are target.