Does applying for multiple credit cards hurt my CIBIL score?

I plan to apply for 3 credit cards in 2 months to maximise rewards. Will this hurt my credit score and my future loan eligibility?

On the add-on card: yes, the primary cardholder is fully liable for all spends on the add-on. There is no separate credit limit or statement. So only issue it to someone you trust absolutely — spouse, parents. Not friends, not siblings you have money disputes with.