You should only have one next action list, comprising next actions for all your projects. I wonder if the problem is that you are trying to put "next" next actions on your list.
Originally Posted by canadianian
For example for a project "fix the sink". Next action might be "call Fred for advice". The action after that might be "follow Fred's advice" but that is not a next action because it depends on the first true next action.
You can put the "next" next actions under project support but often mapping out a project's expected future in such detail can be a waste of time because of unexpected results from previous activity. For example in the project above, Fred might not be able to give advice and the next action would then become "call a plumber".