Render Specific frames of sequence?

I have a composition of 300 frames, and the first 40 and last 47 are simply blank! No activity, no viewable objects.
Is it possible to render only frames 40-253, and not waste time rendering these other roughly 80 frames?

How does one go about doing this? It’s a particle emission confetti composition I
ve been working on, and only want to capture the confetti after it begins coming into the camera view, and stop once the last particle has left view.

Make sure you have baked the particle simulation from start to end.
After that you are free to set whatever Start and End render frames you want. The particle sim is stored in the cache.

Not sure how to “Bake” I guess. I’ll be looking into that.