Sorry to say, There is no user guide/manual for download the latest version.
With AxCrypt Premium, You can secure your folders using AxCrypt Secured Folder feature.
AxCrypt secures files, individually. However, you can designate folders as ‘secured’. The folders will be monitored for new files, and AxCrypt will secure all new files with a single click, or when you sign out.
You can also select multiple files, including all files in a folder, to be secured in a single operation. They still remain individual files, and the folder itself is not secured, just the files in it.
You can encrypt a folder by using Secured Folders option. After that if you create a subfolder, it won’t re-encrypt the files of subfolder.
We can include the sub-folder by enabling the feature from the AxCrypt app menu File | Options | Include Subfolders. By default Include Subfolders will be disabled. So Sub-folders are not encrypted without enabling this feature.