I missed that before. Here come my answers for the 3 sagas we have played most recently: Mann (high power level; we had around 100 pawns vis income per year), War against Davnalleus (we played hedgies) and our new triamore saga, that is about hedgies as well.
1. What kind of characters and how many do the player own (one magus? one magus and a companion? one magus or one companion? etc.)
1 magus per player. Except if tyhe player does not want one. I, for example, as alpha SG, tend to play companions when I play, since I do not like playing lab rats. However, in the last manx saga I played Maris from the MoH book since his presence in and out was easy to justify, and I had great fun with him.
Companions are diverse. We have had as few as 1 and as many as 12, since our sagas tend to be long and characters come and go. Generally one per magus is the norm, though. In the hedgie sagas they were far less common, though.
2. Do you try to establish personal relationships between the magi and the companions with the consequence of Magus-Companion-duos?
We try to stablish multiple character relationships so a companion and magus may or may not come along. The central feature tends to be the covenant, but we end up playing soap operas, so inter-character relationships tend to be common. Sometimes the soap opera makes some of the "killer combos" unfeasible, since the characters dislike (or even are actively trying to kill) each other.
3. How many grogs does your covenant own?
Davnalleus War: 10-1,000, depending on the moment. 1000 were quite usual for the pitched battles
4. What do you do with the grogs? (do the players own the grogs, too? is there a pool of grogs, accessible for every player?)
Grog pool. We tend to give them one or 2 REALLY STRONG personality traits so everybody knows how to play them. Generally the personality is blank until one player comes along and grabs one of them for the adventure. We are less serious with grogs than with other characters.
5. Are all grogs worked out with stats or do you have a "kitchen staff, not nearer defined"?
Grogs refer to a small set of common stats. Young warrior (age 15-25) --> veteran warrior (age 26-35)--> old fart (35+). All have the same skills and combat totals for the category. We have 10 categories all in all IIRC: Grogs do not earn experience but refer to their basic set of skills at a given age. makes life easier for us and does not affect the overall performance of the grogs much, really.
6. How does the cast compose if you are playing a story? (does everybody plays a magus or companion or is it possible that some players are playing only grogs (or even only one grog) in the current story? is everybody playing only one character or is it possible that a player plays multiple characters in the current story?)
Players decide what and who to bring to the story. More than once only grogs, or grogs and a single companion have been sent to investigate something. Sometimes the SG decides on the party composition by dropping the part in the middle of the road already. Players tend to switch between characters in the middle of a scene rather easily. It took us some years to get used to this, though.