Edit existing powerpoint presentation

We seek a skilled freelancer to enhance an existing PowerPoint presentation by implementing screen timings and ensuring a specific video plays automatically on a designated slide without accompanying background music. The presentation should maintain background music throughout the remaining slides. Upon completion, the final product must be transferred to a USB drive, enabling seamless playback on a smart TV. Attention to detail and proficiency in PowerPoint are essential for this project. Your expertise will significantly elevate the presentation experience.