Asynchronous meeting practices

I was reminded recently of this great post in Source about asynchronous meeting practices. In it, Sisi Wei describes a process that combines real-time discussion with inclusive facilitation principles and good documentation habits. One way I like to think about these kinds of systems is to imagine the collaboration happening in three phases: before a real-time gathering, during that gathering, and after. What kinds of structures and supports can you create that help people to participate fully, wherever they are, in all three phases?