Get your taxes done using TurboTax

Go to Business tab- then Continue
Choose Jump to Full List -or I'll choose what I work on

Then…..
Business Income and Expenses - Click the Start or Update button

If you haven't added a business yet you have to go though a lot of screens describing your business.  Or if you already added your business, you should see the Business Summary page that lists your businesses, (right below the list you can Add Another Business)

Then click EDIT by the business name and the next screen should be a list of  topics,
Business Profile, Income, Inventory/Cost of Goods Sold, Expenses, Assets, and Final Details last.

Under Business Expenses - click Start or Update by Home office expense

You have to answer yes to both questions about exclusive and regular use, not just one.  The area of your home office must be used regularly and exclusively for business to deduct it.