Hello there, Which status should I select when I'm single but had children? Will the return calculated correctly while no children information optional for Single status.

Hello TurboTax, I had difficulty about filling my status and children sections when I filled my tax return by used Turbo Tax software. My return always corrected by CRA and they won't give me a hard time last couple years. Here's the issue; I'm single but had children. When I selected "Single on the status" there is no optional asked to fill out the children information, except the status, had selected "Married, Divorced, or else...". Because of that, the calculated incorrectly. Would you let me know what to do? and how do I fill my return for next year? Anyways, TurboTax software is very easy to use and finished in no time. Hope that problem solve for the next return. Thanks and have a good day.