Hi James,

My advice to you is "start small and start slow".  There is no need to setup one big meeting but rather setup individual 1:1 meetings.  Start with the people you know already.  Each meeting/interview with open new insights and will give you the chance to adjust your style and interview for the next person.   At the end of the meeting ask to be introduced to another colleague in the office.  Since the request from you boss sounds a bit generic - it's probably better to have one on one meetings rather than one big group.

Wishing you success!

Adrian