Clicking a recipe in the 'recipe preview' of the machine builds the machine…

Clicking a recipe in the 'recipe preview' of the machine builds the machine with that recipe

When you put your mouse over a machine in the construction menu you'll get a preview of the recipes that the machine can make.
Have it to where when you click on one of the recipes in that preview, the machine will be built with that recipe pre-selected

Left click on build menu item in the recipe window to build. No reason to look something up and then go try to find it in the build menu when it's right there in the recipe browser.