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Questions seeking debugging help (“**why isn't this code working?**”) must include the desired behavior, a *specific problem or error* and *the shortest code necessary* to reproduce it **in the question itself**. Questions without **a clear problem statement** are not useful to other readers. See [minimal working example (MWE)](//tex.meta.stackexchange.com/q/228).
Questions asking us to **recommend or find a package, font, tool, book or other off-site resource** are off-topic as they usually do not revolve around an abstract issue. Instead, [describe the problem](//tex.meta.stackexchange.com/q/228) and what has been done so far to solve it or, if applicable, ask on [Software Recommendations SX](https://softwarerecs.stackexchange.com/).
This is a questions and answers site, not a place to dump your work. You can take a look at [TeX Consulting and Production Services](https://www.tug.org/consultants.html) to find people who will do such things for you (for money of course).
You have been taken in by a common misconception. What is referred to on the internet as “LaTeX templates” are in reality **other people's documents** which are tailored to their *specific* needs. Therefore it is close to **impossible to perform any modifications** on these without breaking the entire thing. They are really only meant to exchange their content with yours. Any other adjustment is simply out of scope.
That's a very simple task. I recommend you read one of the many resources listed under [What are good learning resources for a LaTeX beginner?](https://tex.stackexchange.com/questions/11) or if English is not your first language see [LaTeX Introductions in languages other than English](https://tex.stackexchange.com/questions/84384).