Your Schedule A is filled out on the backside of TurboTax's software when filling out your itemized deductions. To make any corrections to what would be on your Schedule A you would make the changes under Federal then under Deductions and Credits. If you need to delete the form and start it over you can click on My Account - Tools - Delete a Form, then find the Schedule A and click Delete next to it and then you can re-enter the information; however, to just simply change information on the form you would do it under Deductions and Credits which is under the Federal tab.
https://ttlc.intuit.com/replies/3302335
Not sure why TT needs to be a nanny when it comes to Schedule A. It should be as available as any other form in the program. I can understand the need most people have to go step by step. That isn't always necessary though.
For instance, I have all my cash donations scheduled out in detail. I don't need TT's program to summarize them. The IRS only wants to know the total cash donations; it does not require a detailed list of each and every donation. I know that I am responsible to have accurate records to support cash donations and I have those. So why do I need to enter each donation one by one (again!) when I've already done that work and can simply enter the total?
In-kind donations are different, granted. Detailed entries are needed and I have no problem with that. But deleting the Schedule A from the list of available forms is completely unnecessary.
Please feel free to contact Customer Support if you would like to speak with someone about this.