Yes, there is an option for you to add a co-applicant (co-borrower) while applying for a personal loan. The only condition is that the co-applicant should be a family member like spouse or parents. The benefit of adding a co-borrower is, loan application will be processed in a higher income bracket, provided spouse is working and has a regular income. This increases the chance of availing the loan for a larger amount.
However, the chances of getting the loan approved may get affected in case of poor credit history of you or the co-borrower. Hence, it is advisable to analyze the credit history of co-borrower before applying for a loan.