Go to the SharePoint Setup tab.  From the side menu, click on Folder Templates Manager.

1. The New action button in the page header allows users to create a new folder template.
2. A list of all previously saved folder templates.
3. A row action menu containing various action items available for each folder template. 

When the row action menu is selected (see #3 above) these are the available options:

1. Edit - Edit an existing folder template.
2. Delete - Remove an existing folder template.
3. Manage Folders - Visualize and manage sub-folders structure within your folder template.

From within the folder templates list, select the Manage Folders row action on a folder template or click on the Template Name column value.

1. The Folder Template ID value in the header is a unique identifier for each folder template and can be used within automation flows.
2. A tree-view list of sub-folders within the folder template, where parent rows display folder template names and subsequent rows inside the display list of folders.
3. A row action menu containing action items available for each tree-view row item. 

When the row action menu is selected (see #3 above) these are the available options:

1. Edit - Edit an existing folder name.
2. Delete - Remove an existing folder and sub-folders within.
3. Add a Sub-Folder - Allows adding a sub-folder directly within the folder row where action is initiated. (This action is only available up to three level deep hierarchy of the sub-folder structure within the folder template.)