In any group, there are four basic functions, and we specialize in one in each lifetime, although we can do the others also:

Love position initiates. "Let's go to a movie!" for example.

Knowledge position provides information to the group (scholars don't always do this within groups). "I know where a good movie is playing and how to get there."

Power position powers the group to take action. "C'mon everyone, let's get in the car."

Support position mediates and helps: "I'll get popcorn."

For the record, the word "quadrant" refers only to the quarter, or the part. The word "quadrate," found in Yarbro, refers to a whole that contains four parts.