Click the + menu at the upper right and select Add an external location.
Click Create location.
Enter a name for the location.
Optionally copy the storage container path from an existing mount point.
If you aren’t copying from an existing mount point, enter an S3 bucket path.
Select the storage credential that grants access to the location.
At the bottom of the screen, click External Locations.
Click the name of an external location to open its properties.
To grant permission to users or groups, select each identity, then click Grant.
To revoke permissions from users or groups, select each identity, then click Revoke.