If need be

Pro Tip 1/3

Emergency Plan

Use it when you're talking about a backup plan or a last resort option, not your first choice.

We can cancel the outdoor event if need be, but let's hope for good weather.

Pro Tip 2/3

Slight Uncertainty

Implies that there's a small chance you will have to take additional action, but it's not certain.

I think we have enough chairs for everyone, but I'll fetch more if need be.

Pro Tip 3/3

Flexibility Highlight

This phrase illustrates your willingness to adjust or accommodate changing situations.

The agenda is flexible, and we can skip some parts if need be.