Walsh played a central role in the White House as Trump's primary scheduler, positioned near the Oval Office and acting as a critical hub for the flow of information between the president and his staff. Her responsibilities included managing the president's schedule and ensuring that essential information was provided to him, aligned with the administration's priorities. This role put her at the heart of the internal dynamics within the White House.

In her capacity as a scheduler, Walsh became an intermediary among influential figures like Bannon, Kushner, and Priebus, who were key players in shaping Trump's agenda. Her ability to filter and organize information was vital in helping the president navigate the complexities of his administration, emphasizing the importance of her position in the overall functioning of the White House.