NH-DI lets 3 kinds of people register a team for regionals:

  1. the purchaser of the team number
    The purchaser is set when the team number is purchased and cannot be changed.

  2. the coordinator for the team
    The coordinator is initially the purchaser, but can be changed in the Team Adults pane during this registration process.

  3. any team manager
    Initial there are no team managers for a team.  Team managers can be added int Team Adults pane.  You can also add yourself as a team manager as explained in the My team is missing topic.