In a 1040 return, depreciated items are recorded on the Depreciation screen and then the activity is set to the Passthrough K-1.  So you would add the asset on the depreciation screen, for Form select "Schedule E - Partnership, Scorporation or Estate/Trust, whichever you need.  Then in the activity box choose the K-1 that you need it to link to.  Then the section 179 expense is entered in current section 179 expense.