It's Garry Shandling's Show (1986)

S04E12 Leonard Gets Metaphysical

As Garry embarks on a tour with Guns and Roses, he entrusts the responsibilities of the show to Grant. While Garry is away, Grant must navigate the challenges of running the show, leading to unexpected situations and personal growth. With Garry's absence, Grant discovers new aspects of his own abilities and the dynamics of the team, ultimately transforming the experience into a journey of self-discovery.