You can send entry invitation emails to people you want to invite to the tournament. The only information required for an invitation is their email address. After entering their email address, they will receive an entry invitation email.
If the player is not yet registered, a registration instruction email will also be sent, and they will register based on that. They will then fill in the necessary information on the entry form based on the email's content.
Once invited, a yellow bell icon will appear in the upper right corner of the Compekun screen. Selecting "Check Invited Tournament" from this icon will take them to the entry form.