The phrase "systematic review" can actually refer to a number of different kinds of literature reviews, each of which has a different purpose and is performed differently. On the other hand, if you Google "systematic review," you're likely to find instructions and advice for conducting one very specific type of review. This is the type that academic journals usually publish, and it involves (among other things) more than one person reviewing the articles to decide if they're relevant to the topic. The article below describes other kinds of systematic literature reviews. You can discuss which type you're doing or should do with your faculty advisor, so that it will be easier for you to find instructions that are relevant to your project.
This library guide, from Duke University, summarizes the types in the Grant and Booth article:
Systematic Reviews: Types of Reviews (Duke University)
This video, made by a librarian at the University of Southern California, explains the difference between a systematic review and a literature review, or systematic literature review, which is more similar to what you are likely doing for your Capstone project.
This article gives a good outline of the steps you'll need to take to complete a systematic literature review:
Depending on what kind of review you're doing, the requirements may be slightly different, but most systematic literature reviews will require the following:
The PRISMA diagram or flow chart is the standard way that researchers report their process of selecting articles to include in their systematic review. Below is a link to the actual diagram (when you submit a systematic review for publication in an academic journal, you're required to fill this out) and another link to academic articles that explain what it is and how it works.