If you used Turbo Tax last year you should start a brand new account for yourself and not transfer from last year. You can not remove a spouse or switch the order of names.
Online is only good for 1 return. But you can use the same email address for 5 accounts. How to start another return in the Online version
Start a new account. Removing a spouse is not recommended
Getting Divorced article
Video tips for Divorced couples
And see what AGI to use
"Divorced" is not a filing status. You may be Single, or if you are the custodial parent of the children you might be able to file as Head of Household.
You should not use the old account that was once used for a joint return. Start a new account with a different user ID. It is too messy to get the "spouse stuff" out of the old account and can give you errors when you try to e-file if you use the old account.
Am I Head of Household?
If you qualify as Head of Household, when you enter your filing status (single or married filing separately) into MyInfo, and then enter your qualifying dependent, TurboTax will offer HOH as your filing status.