I usually assemble a small, cross-functional diverse team of workshop participants. More diversity usually results in better outcomes. Diversity of skill, skill level, gender, background, experience and roles are among the factors considered.
I work to identify a convenient and conducive time and location (possibly virtual, possibly offsite). I guide the team through a variety of exercises using techniques to deepen their understanding of the challenge, ideate, select and develop concepts, and experiment with prototypes while having fun and allowing every voice to be heard.