Q: How do you conduct the validity and reliability tests of an instrument?
Follow the template as your guide.
For us, or anyone else related to research (or research publishing), to be able to answer this question, as may be evident from the question itself, we would need to have further details about two things: the instrument itself and the template. So, it would be great if you could provide these details.
That said, as this seems to be part of a project/assignment, it may be best to attempt this on your own, with support from others (be it here or from seniors/supervisors) as needed. So, to help you get started, here are some questions by other researchers previously around research instruments.
All the best for your project!