With the Container and/or Folder Mapping Feature user can dynamically define the values of the container and folder in which the files would get uploaded. The fields from which the container and folder values will be used can be defined using the 'Container and/or Folder Mapping' page in Additional Features section of About Page.
We are following the below flow for selecting a Folder and Container to upload in Azure. This flow will be respected whenever an upload to Azure is made either from Azure Integration LWC, Migrate Now, or Migrate Real-Time.