How do I turn the alert off on the watch?

You will turn on your watch. Using that same button, you're going to double-click to access the menu > then you will single-click to scroll down the menu page.

You will keep scrolling to the next page until you reach "alert? yes," and you will hold the button until it is highlighted. Once it is highlighted, then that means it is ready to be edited. You can single-click to toggle it to no, and hold the button to save your results.

This can be done to edit anything else you would like in the settings.