RST is a small software firm that operates using the very latest technology. As a result, the employee skill sets required change rapidly. The skill sets of employees who have been with the company for several years are found to be inferior to those of new hires, and the company has realized that fresh graduates are often better qualified to handle the projects. The firm's resources are limited and it needs to spend as little as possible on the staffing function, reserving most of its capital for project-specific investments. Which of the following staffing goals would be most suited to the company's needs?