DS 160 Principle Applicant? URGENT!

[invisible]

What is this principal applicant? Do I have to enter My husband's name who is on H1 or Do I have to enter My dad's name (my husband is sponsoring for my mom and dad)

Also In the second DS 160 form for my mom, what to enter in place of principal applicant?

[immihelp]

For visitors visa, both your parents are primary applicants.

Read https://www.immihelp.com/us-visa-ds-...l-information/