Is there a component that lets you enter manual goal split times?

Ideally it could trigger a sound if the goal split wasn't achieved.

Can you elaborate more about what you mean for "goal split"? The "splits" component mainly store the name of each split, the time of the split in your PB run, and the best time ever for the split (gold time).

It shouldn't be too difficult to add a list of split times to your splits as a comparison you can switch to.