You are stepping into the role of a new manager at a rapidly expanding small company. Unlike your previous workplace, where diversity initiatives were integral to success, diversity isn`t a central focus in your new company. Recognizing the pivotal role of diversity in fostering growth and success, you decide to prepare a presentation on diversity to be delivered at an upcoming management meeting. Develop a comprehensive presentation, complete with slides and speaker`s notes, that:

• Explores the concepts of primary and secondary diversity, elucidating their distinctions, providing concrete examples, and elucidating how they shape individual perspectives.
• Highlights the advantages of cultivating a diverse workforce, supported by real-world examples.
• Backs up assertions with research findings and contemporary case studies to analyze the impact of diversity on companies in today`s competitive market.
• Illustrates the potential challenges associated with fostering diversity in the workplace, offering relevant examples. Ensure the presentation adheres to standards of grammar, spelling, punctuation, and sentence structure. Incorporate credible sources cited in APA format to support your points.