Do you intend to provide a model application for disaster relief organizations to apply?
A prototype application would not be particularly helpful because each organization must provide detailed information about its own activities, finances, governing board, and other types of information particular to an applicant. Form 1023, Application for Recognition of Exemption under Section 501(c)(3) of the Internal Revenue Code, Form 1023-EZ, Streamlined Application for Recognition of Exemption under Section 501(c)(3) of the Internal Revenue Code, Publication 557, Tax-Exempt Status for Your Organization PDF, and Life cycle of a public charity provide detailed information about applying for exemption.