Need to list 7 items under code 20 AH on K-1 but cannot. It asks for other information but no space to enter.

When you are entering information on the Enter Box 20 Info screen, the table will automatically add another line at the bottom   [See screenshot below.]

note that most items on line 20AH go nowhere.  there is no standard for what 20AH# would be on one k-1 and what it would be on another k-1.  for example 20AH1 on one k-1 might report unrelated business taxable income.  this only has significance for tax-exempt entities. on another k-1 it might be for nontaxable adjustment to capital which also has no tax consequences for taxpayers. another item might be US interest included on line 5 if you have a state income tax this would probably be a subtraction for state income tax purposes. other items may need to be entered on other forms but without knowing what each of your 20AH lines says we can provide no guidance