What is the process for completing the Affidavit of a Family Member Form for visa extension in Thailand?

The Affidavit of a Family Member Form is required for visa extension, particularly for those supporting a Thai child. The form has three sections: the first is filled out by the family member, who can be anyone related (spouse, parent, etc.); the second includes the foreign parent's details; and the third involves obtaining three signatures: one from the family member, one from a competent officer, and potentially one from a witness. Different Thai immigration offices may have varied requirements for the witness's signature, ranging from just a signature to requiring the witness to be present at the immigration office.