You do not need a call before creating an agency. When a migration, security review, or product question needs context, email goes to the team directly.
Each link opens your email client with a useful subject. Nothing is submitted until you choose to send it.
The first note can stay short. Name the goal, where you are stuck, and the part of the agency affected.
The help center explains core workflows. A free agency lets you test setup and the child record without waiting for a reply.