Financial Contributions to the child question in new online form

dear friends please guide these are mandatory docs in new online form for extension of tier 1 entrepreneur

1. Evidence of your parental relationship with Mr .................. such as a birth or adoption certificate, proof of financial contributions to the child's well-being or general evidence demonstrating concern and interest in the child ???

2. Evidence of your access to Mr ...(my child)..........., such as a written agreement between both parents or a child arrangement order ???

waiting for guidance

Birth certificate is what they want