I can more or less change things in real time if necessary.

"You'll be given whatever time necessary to assist the police."

Take the necessary time to define clearly what kind of information you want from the book(s).

You should always interview potential candidates - several times if necessary.

Many felt it was the minimum time necessary to get ready.

I couldn't give up the writing time necessary to enter public life.

I could have stopped and shipped at any time if necessary.

I just hit 's' one more time than strictly necessary.

This is the minimum time necessary to agree such important issues.

We think that it will be safe to use your power for the short time necessary to effect a landing.