Once a particular region has been chosen, magi can group into covenants as they choose. Magi grouped together may choose up to 7 points of Boons and a matching number of points of Hooks. Remember that you'll be building your covenant, so many of these reflecting the physical facility or the coven folk are probably not relevant. However, it could be that you move into some sort of existing structure or something like that. You may also select up to 15 pawns/year of vis sources, no more than 5 pawns/year of which may be Technique vis, if you describe them with some detail (only 2/3 of that may be taken if you don't).