What do you mean by "use" Schedule K-1? Did you receive a Schedule K-1 from a trust or estate, and you need to enter the Schedule K-1 in your personal Form 1040 tax return? Or are you trying to create a Schedule K-1 for a beneficiary of a trust or estate?
If you have to enter a Schedule K-1 that you received, type k-1 in the Search box, then click the link that says "Jump to k-1."
If you are trying to create a Schedule K-1, you can't do that with TurboTax Premier. Schedule K-1 is created as part of the Form 1041 tax return for a trust or estate. To prepare a Form 1041 tax return you have to use TurboTax Business (not Home & Business).