where under the About Your Business section do you enter that you have an employee?

Schedule C line 11 is for Contract Labor that you would give a 1099 to.  For employee W2,  Employees Gross Wages goes on Schedule C line 26 Wages.  The employer portion of taxes goes on line 23 Taxes and Licenses.

I'm not sure how to get there in the Online version but my old notes say.......

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 Other common business expenses

Employee Expenses for Wages and Benefits is the 6th item under Expenses - Click the Start or Update button

If Employee Expenses doesn't show up in the list you need to go back to the Business Profile section and click Edit by Has Employees and change it to yes.

Please let me know if this helps