You can register a TileDB array that exists in an S3 bucket under your control, by clicking on
Arrays in the header menu, and then on button
A pop up will ask you to provide the S3 path to your array, the AWS keys that can access this array (you have this already set up), the owner of the array (it may be you or an organization you own), and a friendly name that will be used by all the users you might want to share the array with. Your array will be accessible by
tiledb://<namespace>/<array-name> after it is registered, where
namespace is the owner of the array.