Question

operating a tubular sectioned axle stand
the locking mechanism may vary on the different types of jack stands.
raising
move the cup upwards, until the section with the hole in the jack stand.
locking
the cup is locked by inserting the steel pin through the holes in the jack stand and the holes in the tubular section.
lowering
check that the vehicle is not sitting on the jack stand, before you lower the cup. hold the cup or the tubed section with one hand; use your other hand to remove the locking pin and lower the cup.
take care to not get your hand caught between axle stand and cup!
how is the cup on a tube sectioned jack stand raised to the intended height?
use one hand to raise the cup to the intended height; use your other hand to fit the locking pin.
the tube is freed inside the stand by twisting the cup a quarter turn. this pipe can now be set at the required height by turning it.
use two hands to pull the cup upwards; friction in the jack stand will cause the cup to remain at the correct height.

Explanation:

The text states "Move the cup upwards, until the [relevant] section with the hole in the jack stand." This implies using two - hands to pull the cup upwards as it is a physical action and friction in the jack stand will keep the cup at the correct height.

Answer:

Use two hands to pull the cup upwards; friction in the jack stand will cause the cup to remain at the correct height.