Document type properties
In the Document type properties, you can decide whether or not you allow the creation of a guide with the document type, whether or not you allow to create a new version of a guide and select which of the metadata information is read-only.
Allow create
If this option is enabled, users will be able to create a guide and select the Document type. If this is not enabled, users will not be able to select it from the dropdown when creating a new guide.
Allow new version
If this option is enabled, users will be able to create a new version of a guide. If this is not enabled, users will be notified that they cannot create a new version.
Metadata read-only
The selected metadata will only be read-only and users will not be able to enter the data in this field.
Check out the video tutorial (LINK)