Each project goes through a series of stages in order to achieve the coins' distribution among the participants:
Registration in whitelist, where users can apply for participation.
Lottery - At this time, the winners are determined - the whitelist participants.
Sales - participants need to redeem your allocation as soon as possible.
Distribution - everyone who bought the allocation receives project tokens.
If at any level the participants have not redeemed all the available tokens, then the second stage of the sale is automatically added, when the remaining tokens are distributed evenly among the other levels. If there are tokens left after the second sale stage, then the remainder is returned to the project