What does follow form mean?

follow form meaning in Insurance Dictionary

When an umbrella policy supply uses the underlying plan as to how the supply is applicable. Follow type also identifies an "excess" liability policy that uses the root guidelines for most policy provisions. The insurance policy may stand alone for several exclusions, problems, etc., while relating returning to the root protection for many provisions. This particular plan form is normally used excess of planned underlying insurance coverage and usually contains a necessity that insured maintain scheduled underlying insurance. See also Extra obligation "follow form" plan; Extra obligation plan; Contribute umbrella; Stand-alone excess policy; Umbrella obligation policy.