2.2bb, 4bb, pot, max. 

33%, 40%, 50%, 67%. 

This is not really optimizable, designed personnalised bet size will always be more optimal IMO.

When you bet a certain % of the pot you give your opponent different odds to call with his range so...

Let's say you want to give Vilain 20% pot odd on his call you would have to bet 33% of the pot. If you want vilain to have 50% pot odd on his call you would have to bet the infinite.

Personally I want to have bet size that gonna give me known fold equity so I can bet according to my range distribution and what I'm trying to accomplish with that range.

If you want to have:

20% F.E you need to size a 25% PSB, giving your opponent 17% odds on his call

25% F.E you need to size a 33% PSB, giving your opponent 20% odds on his call

33% F.E you need to size a 50% PSB, giving your opponent 25% odds on his call

50% F.E you need to size a 100% PSB, giving your opponent 33% odds on his call

66% F.E you need to size a 200% PSB, giving your opponent 40% odds on his call

In MTT you have to balance your bet size decision between chip conservation and bet size effiency in relation with what you try to accomplish in the hand at a given point of the tourney. ICM is often a factor in the late stage.