Cloning a self-interaction and changing it?
What I want to do is make a "clone" of the "Go Hiking" self-interaction from FreeTime, rename it to "Go Out", and make it so that the sims that go out return more hours later (let's exaggerate and say 10 hours), maybe with their motives unchanged or maybe even raised. The reason I want this is because I really wanted a feature like in Sims 3 where the parents go away for some time and their kids stay home alone (for storytelling reasons).
Does anyone know how I could do this? Will it be not-too-horrible, or an absolute nightmare to make?
Thank you in advance for any feedback!