All subsections have default names that are associated to the layout. You have the ability to rename the subsection names.
Add a new subsection (content)
Edit the subsection
Rename the subsection in field "Subsection Name"
Save
Tips!
Rename subsections based on the content for ease of review and searching, this will help when using the copy subsection feature
Points to Note
All subsections must be named. If the name is removed, upon a save the default name will be placed back.