Highlight the benefits: Present the managing partner with the benefits of modernizing the firm, such as improved efficiency, cost savings, and enhanced client experience. Provide data and statistics to support your argument, such as increased revenue for other firms that have adopted modern practices.

1. Show the competition: Provide examples of other firms in your area that have already modernized, and how they are gaining an advantage over your firm. Show how they are attracting new clients, improving productivity and efficiency, and increasing revenue.

2. Offer solutions: Come up with specific, actionable steps that your firm can take to modernize, such as implementing new technology, redesigning the website, and offering virtual consultations. Provide a detailed plan of how these changes can be implemented, including timelines and budget.

3. Address concerns: Anticipate any potential concerns that the managing partner may have, such as the cost of modernizing or the risk of disrupting current operations. Offer solutions and alternatives to address these concerns and demonstrate that the benefits of modernizing outweigh the costs.

4. Get buy-in: Get the support of other partners and key members of the firm before meeting with the managing partner. Show that there is widespread support for modernizing the firm and that it is not just your idea.

5. Be persuasive and persuasive: Use persuasive language and persuasive techniques to demonstrate the urgency and importance of modernizing the firm. Show how modernizing is not just a nice-to-have, but a must-have for the long-term success of the firm.

6. Provide examples of modern law firms: Share examples of successful law firms that have adopted modern practices and how they have benefited from it.

7. Emphasize the future: Show how modernizing the firm will position it for future growth and success. Highlight how new technologies and changing client expectations are going to affect the legal industry in the coming years, and how modernizing now will help the firm stay ahead of the curve.

Remember, it's important to be clear and concise in your message, use data and statistics to support your arguments, and be prepared to answer any questions or concerns the managing partner may have. Show them the benefits of modernizing and how it will benefit the firm and its clients in the long run.