For eligible dependant - do i need to file a separate return for the dependant? It wont calculate my dependant as the equivalent to common law

[TurboTaxSusan]

No, you don't need to prepare a return for your dependant to claim them as an eligible dependant. 

Please see this TurboTax FAQ for the criteria for the eligible dependant credit and how to claim it: https://turbotax.community.intuit.ca/turbotax-support/en-ca/help-article/tax-return/add-remove-amoun...