To download a pre-formatted spreadsheet, click on [Import]:


This will allow you to download
an empty spreadsheet - great for adding multiple users at once.
OR
a spreadsheet containing all existing users - great for changing details for multiple existing users at once.
The spreadsheet functions exactly like the the interactive (one by one) method (see here), with one column for each field. Once you're done, simply upload the completed file.
The [Import] method has some limitations:
You cannot change someone's existing username. Changing a username here will simply create another user with the new username. To change someone's username, use the interactive method (see here).
With this method you can only assign one organisational structure unit to a user. If you want to assign more than one unit to a user, use the interactive method (see here).