Yes it is separate . You need to buy Turbo Tax Business, not to be confused with the personal Home & Business version. Home & Business is just for personal returns that need schedule C for self employment. TT Business is not available to do online or on a Mac. You can buy the Windows Desktop program here,
https://turbotax.intuit.com/small-business-taxes
You can have both a personal program and the Business program installed on the same computer at the same time.
You will get a W2 or K-1 from the business return to enter into your personal return. So you will need to do the Business return first.
Window System Requirements
https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-windows-software/00/26175
See https://turbotax.intuit.com/small-business-taxes
You need to prepare your 1065 using TurboTax Business and then use a TurboTax individual income tax preparation product in order to prepare your 1040 and include the K-1 (1065) from your LLC.
The personal editions of TurboTax cannot be used to complete and file a Partnership tax return, Form 1065.
You will need the TurboTax Business Edition for the 1065. The Business edition can only be installed on a Windows based personal computer, not on a Mac or online. The Business Edition cannot be used for a personal tax return, Form 1040.
Go to this TurboTax website for the Business Edition - https://turbotax.intuit.com/small-business-taxes/
The Business Edition will create a Schedule K-1 which is entered on your personal tax return.