Global settings are found on the Manage Application page and are grouped by predefined setting categories. For example, the Transactional Email settings might look like this:
Custom settings configured at the global scope can also be viewed from the Manage Application page. Custom settings are any settings (in a name/value format) that are not defined on the API Clients and Permissions page. For example:
Note. What if a setting doesn’t appear on the Manage Applications page? That’s fine: it simply means that the setting hasn’t been defined at the global scope.