If someone leaves your club, you should also archive them on Sportlyzer in order to keep your member list up-to-date.
To archive a member, follow next steps:
1. Open Players section
2. Mark the members you wish to archive - you can mark several members to archive them all at once (if you only wish to archive one member, it's easier to click on the rightmost 'More' button to access specific athletes' management tools & continue from there).
3. Click on 'More' and select 'Archive'
After that, you will be able to access all archived members in the Archived section, where you can export their data, restore them and also delete them from your club forever.