What's the purpose of these survey templates?
The Market Research form is an online survey/questionnaire that provides valuable insight into a specific market. It could be that you're planning a product or perhaps expanding the reach of an already existing one. Whether it's about a new type of candy or a car air freshener, you ought to know the people interested in those products in order to place your creation and understand how you can change your planning to squeeze each drop of success from the results.
Are the templates customisable?
All of them. Pick any survey template and get on with it. The length will depend on how exhaustive your "interview" is going to be, but generally speaking, this is a quick survey. Everything from the text, questions, design, or the ability to include pictures, for example, is there for you to investigate and play with. It's fine to research other people's preferences... but don't forget your own.
How can I use it?
Okay, so... after you create a survey and the result satisfies you, it's time to share it with the world (or at least the part of it that you want to get information from). Since it's possible that you do not have the number or email of everyone you'd like to participate in, embedding the form onto your company's website or social media profiles is usually the go-to option.