An esportsdesk number is a unique identification number in the esportsdesk registration system (linked to your User Account). If your organization has set up memberships for purchase, they may be using esportsdesk's unique ID number in place of creating their own membership number.
Furthermore, if you ever need help with your User Account, you can always provide your esportsdesk # to your organization or an esportsdesk staff member to help speed things up.
Select "My Profile" on the menu in the left or at the top right corner (or left navigation menu).
Scroll down the page until you see "esportsdesk #". This is your unique ID number.