Let's say we have 200 tokens (example) and we imput 6.5 as the rental fee. We then get 50 tokens rented out, but it stops there. So we figure that we must have set the amount too high and we want to change the rental fee for the rest of the tokens. How do we change the rental fee for the rest of the tokens and if we do that will the tokens we have rented out already be placed under that lower rental fee or will they stay under the higher rental fee that they were already placed under? It seems to me that it is all or nothing. Yo have to pick your fee and stick with it. They will let you rent what is available.