I don't do CA, but looked at the form for 2024. Seems to be straight forward. What don't you understand about the questions on it. This from instructions for form 3532.

Qualifications

You may qualify for HOH filing status if all of the following apply.

• You were unmarried and not an RDP, or met the requirements to be considered unmarried or considered not in a registered domestic partnership on the last day of the year.
• You paid more than one-half the costs of keeping up your home for the year.
• Your home was the main home for you and a qualifying person who lived with you for more than half the year.
• The qualifying person was related to you and met the requirements to be a qualifying child or qualifying relative. (For a qualifying relative, see the instructions for Part III, line 4, Gross Income.)
• You were entitled to a Dependent Exemption Credit for your qualifying person. However, you do not have to be entitled to a Dependent Exemption Credit for your qualifying child if you were unmarried and not an RDP, and your qualifying child was also unmarried and not an RDP.
• You were not a nonresident alien at any time during the year.
• You paid more than half the cost of a qualifying person’s total support.
• Your qualifying person is a citizen or national of the United States, or a resident of the U.S., Canada, or Mexico.