Within around two hours your contest enters the phase called Top 5 meaning you can get to work on revisions, tweaks, minor or major changes etc with the first top 5 ranked designers and rank accordingly.
After this phase your contest enters the mode called Judging where only nr1 ranked designer can submit entries so you can put any designer you like to that position (nr1) to receive entries. No new concepts are allowed in this phase though only some revisions and like.
At the end you declare the winner and get your logo files and release the prize so that the winning designer can receive it.
If, for any reason, you will need some changes after the contest is over you should contact the designer first. Some may ask to charge you and some may not. A big majority of the designers here, as far as I know, are very friendly and they will make sure you are satisfied with your logo.
So you need to make sure you get what you need, all fine tuned and set and all before you declare the winner.
For more detailed info about the process please click here
https://logotournament.com/help/designer/60Hope this helps.
Thanks,