I find that a lot of people are shy on the microphone, sadly. So even with a group of experienced people in a pug, they often need some prompting before they'll call things out, like we get to the confluxes and everybody just stands there and I'm like, "Okay, so who is going where?" After that things just kind of get going. Unless it's a group of noobs, I find that's about all the leading necessary. Occasionally a group will try something a different way from what I'm used to, and if it doesn't work a few times I'll speak up and say something like, "Another group I was in this week did this another way..." and usually at that point people will listen as I explain. But I wouldn't really call that leading. You're not giving orders or assigning people tasks, you're explaining strategy.