There are no measurements, you use as much of whatever you want. Here is what I do, you can change it to fit your likes.
Chop 1 onion and 2 peppers into small pieces and cube the zucchini and squash into 1” cubes.
In batches in a large frying pan sauté, (in a touch of olive oil) 1 large white onion 2 large red, green or yellow peppers, (I use whatever someone has given me). To that I add as much squash and zucchini as will fit in the pan. When it is fully cooked, I put it into a large soup pot. Then I do another batch of the same.
When the second batch is done and in the soup pot I add the following:
2 small cans of tomato paste
2 cans of white kidney beans
3 cups water
1 packet of taco seasoning
Stir it all together set your stove to the simmer setting and cover your pot. Let it simmer for about an hour, stirring it every 20 minutes.
This makes a very chunky salsa that is like a meal. It can be eaten with crackers or corn chips. It can be put over rice or noodles. It is so good.
You can add any other veggies you may want to add. My MIL gave me small bag filled with green beans so I cooked them and added them to the pot.