How does a shareholder fit here? Partnerships have partners.

Are you preparing a 1040 where there is nonresident state withholding from a K-1?

Sorry, was in a hurry.  I have partnership  members that are non-residents of MD and the business paid estimated taxes on their behalf.  Where do I input that so the MD return gives credit for the taxes paid?

To be clear - I am preparing a Form 1065 Partnership Return that is required to file in multiple states, one of which is MD.  There are partners who are non-MD residents and we pay estimated taxes on their behalf.  How to enter that so that MD gives credit for the taxes paid on their behalf?

The "nonresident withholding" is entered on the partners' 1040s.

It will appear on the MD K-1s.

The problem is with the MD Form 510 and showing that the tax was paid.  I have found the input screen to be States/Schedule K/MD Sch K which has an input line for non resident taxes paid.

 would have been easier if you led with "where do I enter estimated tax payments for the MD nonresident withholding on Form 510?"