Regions Global
ONE REGION TO RULE THEM ALL!!!
...sorry, with that out of the way, let's get serious.
The Global Region is the region which is parent to all Dimensional Regions. Most things you are familiar with from Dimensional Regions work the same way with the Global Region.
They can have owners, members, flags, have a state, etc. Additionally, the CLI for the Global Region allows you to manage your Dimensional Regions as well.
You don't. The Global Region is always there, by default active but not configured.
Managing Commands
The Global Region, as the other regions, can be managed only by their owners, or by players which have the required permission.
Members will only bypass flags, like owners do. Note that even with the permission from the config, you won't be able to bypass flags when you are not a member or an owner of a region.
To manage the Global Region, just use the /wp global [info] command. This will show you the interactive info of the Global Region.