In the context of TWAP - Price band is a risk control feature that sets an upper and a lower price limit. This ensures that the trade is not executed at a price that is less or above the price limit set.
It is ideal to use TWAP - Price band when you want to ensure that the trade price is not sacrificed due to inconsistency in the execution arising due to unexpected price swings.
Orders are sent based on the above parameters
We strongly recommend you to not use this automated strategy for illiquid stocks (including out of the money Options)