Pls refer to the below:

Child is below 5 years of age:

1. One of the parents/ guardians has to authenticate on behalf of the child and also give consent for enrolment of the minor by signing the enrolment form.
2. If the child is an NRI - valid Indian passport of the child is mandatory as Proof of Identity (PoI)
3. If the child is an Indian resident (not NRI) - any valid Proof of Relationship document (refer: https://uidai.gov.in/images/commdoc/valid_documents_list.pdf) such as Birth Certificate, along with Aadhaar of the parent/ guardian, can be used for enrolment.

Child is between 5 to 18 years of age:

1. One of the parents/ guardians has to give consent for enrolment of the minor by signing the enrolment form.
2. If the minor is an NRI – valid Indian passport of the child is mandatory as Proof of Identity (PoI)
3. If the minor is an Indian resident (not NRI) -

• No document in the name of the minor: any valid Proof of Relationship document (refer: https://uidai.gov.in/images/commdoc/valid_documents_list.pdf) such as Birth certificate can be used for enrolment under Head of Family.
• Minor has a document: use a valid Proof of Identity (PoI) and Proof of Address (PoA) document (like School ID card) in the child’s name for enrolment (refer: https://uidai.gov.in/images/commdoc/valid_documents_list.pdf).

Refer Government Portal ( https://uidai.gov.in/) for more information