Between 1 and 32 characters
5 minute steps, max 10080 minutes (a week before)
Once you create the porra, you won’t be able to add more matches!
That said, you’ll be able to change the team names, so you can create porras for several matches in the knockout stage of a competition.
For example, you can use W1 vs W2, W3 vs W4, etc. to indicate the winners and then change them once the winner is known.
You’ll also be able to stop the porra whenever you want, for example, when the team you follow is eliminated.