The Imperative Instruction

We form the imperative by using the infinitive form of the verb without "to".

“Switch off your computer every day before leaving the office.”

We can form a negative imperative with don’t or do not.

“Do not leave your computer switched on at the end of the day.”

The imperative is very direct, and doesn’t always sound polite.

The imperative doesn’t usually require a pronoun - it’s usually obvious who is being addressed.

The imperative is very normal with instructions.

"Use letters and numbers."

"Keep your password safe."

"Don’t show your password to anyone."

In this context, it would not sound natural to use full, formal sentences. Use the imperative.