However, you can decide that people are not important and cut them out all together. But if you decide that someone is important you can't pick and choose.
I have a bone to pick with our “ticket estimations” meeting. It’s a waste of time, we don’t even use the estimations for any planning purposes. We just sit there, reading tickets out loud as a group, saying pseudo random numbers that inevitably average out to a 2, 3, or 4.
I’m convinced we’d have better estimations if we just nixed the meeting and sampled estimations from a normal distribution.
But then again. if you don't like the group, your job, go on a quest to find someone else to spend you time with. that is probably the best investment you can do.