The content folder is the designated location where your text content will be stored. When creating a content type, a folder with the same name as the content type is automatically created for you. You have the option to edit the existing folder or create a new one.
To create a new folder:
Navigate to "Content" and then "Content" in the menu.
Click on "New folder" to initiate the creation of a new folder.
Give your folder a name, and select the content type.
One folder must have and can only have one content type.
Folders can have relations with other folders, and there are two types of relations:
Category Folders: Category folders can have one-to-many or many-to-many relations. They are commonly used in scenarios where a blog belongs to a category or a book has multiple authors.
Embedded Folders: Embedded folders contain content that is specifically associated with the current content item. For example, a blog may have an embedded folder for comments.
On above screen, click on "Relation Folders", open the relation folders editing screen and choose the related folder.