As for the results, you'll have access to them after the submission deadline, so just one result per team. You'll have to decide which method to submit without knowing the results and, if you submit more than one zip file, just the last one will be considered.
Please avoid submitting test zip files, otherwise it will raise the probability of any errors in the evaluation.
And as a final advice, don't forget to name the csv file (and the zip also) after the team name, otherwise an automatic evaluation will be impossible and you'll have to wait ages for the results.
All the best