Which appointment option should I choose for applying for an extension of stay based on retirement and marriage in Thailand?

The user is seeking clarification on whether to choose the 'single' or 'family' option when making an online appointment for a visa extension in Thailand, specifically under the categories of retirement based on marriage. Comments reveal confusion about the distinction between retirement and marriage visas, the requirement of having one extension based on either marriage or retirement, and the necessity of ensuring adequate funds in a Thai bank for the extension.