In reply to Sharp:
I have led quite a few funerals, but Jewish funerals so the specifics won't be relevant as there's a very set procedure for a Jewish funeral, but the basic rules will still hold:
1. speak up
2. if people need to do something at a particular time, tell them (e.g. stand up when the deceased is brought in, when to sit down, if you're walking to the grave, that you'll be coming back to the chapel afterwards).
3. if you're going somewhere else, announce it, and provide a sheet of directions.
4. The other points are not relevant, as I imagine you will know who all the immediate family are. It is quite embarrassing when you misread a name!
General practice for Jews is for people to go back to the family home for some food, with someone other than the immediate family taking responsibility for making tea and so forth. We hold the funerals in the same cemetery as everyone else, and if there's a function room, I haven't seen it. Nor, frankly, would I want to use it, there have got to be better places!