It's actually very simple.
Put the schools of your choice in your GENUINE order or preference. If you match with your first choice (e.g. you put a grammar school first and the 11+ result is good enough for that school) you will be offered it and they will not expect you to appeal because that was your first choice. If you don't match with first choice, the LEA will work down your list of choices until they find a match. If no match is found, you will be offered a place at the nearest school that has places available (that's when you need to appeal!!).
Schools do not know which order you put them on the application, as each one automatically moves up to be your first choice if you don't meet the admission criteria for the one(s) above it. So, the important thing to get right is your order of preference.