Hi @chexa_Wee ,

Starting from November 9, 2023, Databricks by default won't configure metastore-level storage for managed tables and volumes. 
Databricks recommends that you create a separate managed storage location for each catalog in your metastore.

So, when you want to create new catalog you just need to provide a path for all your managed objects.Managed storage is a dedicated storage location in your Azure account for managed tables and managed volumes.

Assigning managed storage to a catalog requires that you create:

• A storage credential.
• An external location that references that storage credential.

Here, you have detailed documenation how to create catalog using UI and SQL with managed storage:

Create catalogs - Azure Databricks | Microsoft Learn