:: attenders ::
For the most part I think we use "slate" the way most people do as in "list of candidates" but we carry it over to mean "approved cast" as well.
When you get a playbill with a list of players in a show: that's a slate, the way we use the word.
The other meaning is: "not yet approved" as when when Nominating goes to Business Meeting with a "slate for approval" (the more mainstream usage).
So we could say "unapproved and approved slates" and be plain (clear) in our meaning.
As NPYM's technology clerk, I've been looking at npym_slate (a web page) to see if we've filled any holes still showing as empty, or if we're showing any ad hoc committees that have since been laid down.
Clint has been making changes. This is an "approved slate" we're talking about, just sometimes the web-displayed version lags what clerks carry around in their heads.