Editing is allowed, but it's really up to you. We just want you to post your bets here, you can do it anyway you want.
Ok, I thought it's illegal to edit or we lose our bet in competition. Thanks for the information.
It's not illegal because all bets are tracked in the leaderboard, so there is no problem to edit. You can edit if you don't want to make to make a large number of posts here. The best way is probably to make one post a day with all the bets (so you will be editing the bets for that day, and on the next one you open another reply, but like I said it's really up to you. We just want all participants to post all of their bets here)