You can customize your workspace using the Lightning App Builder.
For more information about the SalesforceLightning App Builder, see the Salesforce Help.
The Fall 2020 version of SCM Workspaces introduced new list views for the SCM Procurement workspace and the SCM Order Fulfillment workspace:
Starting with the Fall 2020 release, such list views are provided with the SCM Workspaces package and replace the SCM core list views the two workspaces were previously using. When upgrading to Fall 2020 or later, the original workspaces, SCM Procurement workspace and SCM Order Fulfillment workspace, will be automatically updated to use the new list views. However, list views will not update automatically for any custom workspaces, these will continue to use the former SCM core list views.
Concepts
SCM Workspaces Overview
SCM Order Fulfillment Workspace Overview
SCM Order Fulfillment Workspace
SCM Procurement Workspace Overview
SCM Procurement Workspace