There are two ways to import groups and task assignments into AGE:

From AGE or Groupifier

Both AGE and Groupifier store groups centrally in something called the WCIF (WCA Competition Interchange Format). If you have already created assignments for your competition with AGE or Groupifier, you can import those into AGE with a single button click.

From a CSV file

If for some reason you want to create groups in a spreadsheet application like Excel, you can save those as a CSV file and import that into AGE. An export in exactly the same format is provided by AGE too, so you can export - edit - import groups.

It's optional!

Note that importing is optional, and even if the competition already has groups, you can always choose to start making groups from scratch!