I think it depends on the structure of the tournament , the same if it was sng . I mean if it's turbo , so the blinds go up very soon , so you need to shove more than call / you'll be needing more blinds than if the blind level was going up every 10 min . So if if it's turbo or higher it's a shove festival . You have bigger stack or position , these factors determine when to shove or fold . Most of the time you shove , the less big blinds you have the wider range you call when sb shoves , for ex in the BB if you have 10 bb left you might call with AQs+ AQo+ 99+ , but with 8 bb you might call shoves/all ins with AQs+ AQo+ KQs AJs 77+ etc , now this is not absolute , it's a guide more or less . The more blinds you have you shorten the range of cards you call . If you need to shove , do it almost always from position , start from low as K8s+, K8o+, Q8s+, J9s+, T8s+, T9o+, 76o+, 64s+ if you're the biggest stack or else ,start from A2+KTo+ QTo+, JTo+, T9s ,54s+ , if you're middle orsmall stack , a lille shorter range (aces K,Q,J-10 ,SUITED).
Now if you have more than 12 bb , play correctly , aggressively , raise the good hands as you know (now 3handed more hands of course) , try to follow the rythm of the other two , don't stay behind by not trying to take blinds/raising when you must raise , don't be afraid that sb might have a better hand .
I must say that it's kinda difficult for me to remember the exact hands to call or shove at every position , this knowledge is acquired by experience , or else/until then use a chart , there are many on the internet , charts about what hands to play ON SNGs , the same rules apply on the turnaments when it comes to the final table . Don't know if they have here on cardchat , try the one they have on pokerstars