Yes, you can, as long as both account holders are 18 years old and above.
Having a joint COL account allows two people to share equal ownership of an account. Any of the two account holders can manage and withdraw from the account. Just note that a joint COL account cannot be converted to an individual account.
A joint COL account also requires the account holders to have a corresponding joint bank account with the same names to ensure that withdrawal requests will be accepted by the bank.
To open a COL account, please go to https://signup.colfinancial.com
For the initial part of the sign up, kindly indicate the primary account holder's details. Once your email and mobile have been verified, then you can select JOINT as your account ownership type when proceeding to fill out your information.