You enter those (and all your other expenses) in the Business section of TurboTax Home & Business.  Click Start (or Update) for Business Income and Expenses.  Answer Yes to "Did you have any income and expenses for a business in 2018?  Continue, you will be asked if you paid any employees, indicate yes.  You will also be asked if you issued any Forms 1099, indicate yes.  When you get to the Business Landing page, scroll down to "Business Expenses" and click Start next to "Other Common Business Expenses".  You will enter your 1099 payments in "Contract Labor" and the W-2 information in Employee Expenses.