A simple method: in the notes field entitled something appropriate, list all your steps.
For an item called "Conquer Albania" which is part of the project "Subjugate Europe", list
- raise army
- defeat Albanian army
- arrange victory parade
As you do the steps, change - to +. If you prefer more visibility, make the item read
Raise army > Conquer Albania
Change the part before the ">" as needed.
I know, you wanted it to be automatic. But this will work.