Assigning an admin to an already-created TimeToSignUp sheet requires the following process:

  1. Log in.
  2. Go to the sign up sheet.
  3. Using the "Sign Up Sheet Administrator Options" drop-down menu, select "edit title, comment, visibility, etc"
  4. Click on the "Show Advanced Options" link.
  5. For the options "Who is the email contact?" select the appropriate admin.
  6. Save changes.