Put the instant pot on saute.
Add a little oil to the pot.
Add sausages and saute for a few minutes until a little brown and remove to a plate with paper towels.
If using cut up chicken breasts, add a little more oil and add chicken and cook until outsides are browning and remove to a plate with no paper towels.
Add the vegetable oil and flour and just mix until the dry flour is dissolved in oil. **.
Add vegetables and saute, adding the thyme, seasonings above including the bay leaves.
Add tomatoes and chicken broth, and stir to scrape the bottom of the pot.
Add meats back into the pot. (If using canned chicken, add now).
Put the lid on and set on pressure cook (or manual) for 7 minutes if using canned chicken and 10-12 minutes if using cut up chicken breasts.
Natural release for 10-15 minutes.
Stir in parsley and the green onions except for the green tops you saved for garnish.
Put in bowls along with the cooked rice and put green onion tops on top.
** You can buy canned chicken at your grocery store. I used 12.5-ounce cans and you may need to buy more than 2 cans if your grocery store sells smaller cans.
** For a thicker gumbo add 1/2°C roux (flour but only use the same 1/4 cup of oil).