The second method is easier. You can download a training plan template from business or management tools websites. Some templates could cost as low as บ. There are generic ones, while there are others that are so extensive that every aspect is taken care of.
However, if you do not want to spend money or you cannot find one that would suit your training ideas, then try the integrated approach. You can look up other companies' templates online and then make a few revisions to make it fit your own approach. If you are lucky, you might even stumble upon a training plan template from a company that is within the industry your business belongs to.