Join us for a five-day workshop hosted by UT Austin, with support from the NSF.  Mornings will be dedicated to talks, and in the afternoons, participants will work in small groups on open problems related to connections between 4-manifold trisections and diffeomorphism groups.  The workshop will be preceded by introductory mini-courses on Zoom.  Participants may register for either or both workshop components.  The workshop will conclude at noon on Friday, 6/27.