Organisation Settings are those that affect your whole company, not just your personal Trail account. Only specific 'admin' members of your company will have access to these settings.
Organisation Settings can be found by going to the Settings page through either:
1. Clicking the settings logo at the bottom left corner of the screen.
2. Clicking your name in the top right corner of the screen, then clicking 'Settings'.
When entering the Settings page, you will automatically be taken to your Personal Profile Settings. The left hand menu will show you the sections for your Personal Settings and your company's Organisation Settings.
If you can only see a menu for your Personal Settings, you do not have access to your company's Organisation Settings. If you believe you should have access to this, then please let your Trail administrator know, as they have the ability to make these changes.