might start with
<CustomBehavior File="RunMacro" Macro="/click LFDQueueFrameFindGroupButton" />
you would need to ensure the proper role is already selected
might start with
<custombehavior file="RunMacro" macro="/click LFDQueueFrameFindGroupButton">
you would need to ensure the proper role is already selected
I can't check right now but it's really easy to do yourself. type /framestack and a little box will appear on your screen that displays the names of whatever UI elements are underneath your mouse cursor. For example, mousing over the Join as Party button you will see LFDQueueFrameFindGroupButton listed first, followed by the other components of the particular frame.
See Blizzard DebugTools - WoWWiki - Your guide to the World of Warcraft
it occurred to me that the following would be better because it should work regardless of the locale of the wow client, whereas /click would only work (i'm assuming) on the english client
<CustomBehavior File="Misc\RunLua" Lua="LFDQueueFrameFindGroupButton:Click()" />