Welcome to Dungeon Craft.
If you've been to the Official site, there is a link in the left menu to "Designs to Play". There are a few there, certainly enough to give you a taste of DC.
In Dungeon Craft, you can have up to 8 members in your party. The default for the designer is to have 6 PCs (allowing 2 NPCs), but this may be raised or lowered. I know there are several of us talking about using 4 PC limits in our designs, mostly so we can have up to 4 NPCs. Just like in FRUA and the other Gold Box games, to control NPCs a paladin is required in the party. This is still hard-coded at this time, though a designer can change aspects of a Paladin (including renaming them or allowing different alignments).
As for putting up with questions...
it's not a problem at all.
The more questions the better.