All the submissions must be in a .zip format. Inside the ZIP, the predictions must be in a CSV format and the order of the IDs must be in the same order as you downloaded. E.g.
For both tasks 1 and 2 the format is the same:
ID,label
A0000,NEU
A0001,NEG ... ...
The name of the CSV for task 1 must be task1_predictions.csv.
The name of the CSV for task 2 must be task2_predictions.csv.
Submit a single ZIP file with a generic name, for example, predictions.zip. I you participate in only one task, the ZIP file will contain a single CSV file. If you participate in two tasks, you should send both prediction files (CSV) in the same ZIP file.