Using the Saute function, heat oil in the inner pot. Once the oil if hot throw in the garlic, Italian herbs and onions. Stir and wait a couple minutes.
Add salt & water and to the pot and deglaze it, making sure no food is stuck at the bottom of the pot.
Add the pasta. Pour the homemade marinara sauce or any tomato sauce evenly covering all the pasta. Please do not stir.
Make sure all pasta is covered under the sauce. If not gently press the towards the bottom, just enough to be covered by the sauce.