JupyterHub: Setting separate user folders with LDAPAuthenticator

I’m running JupyterHub on Windows and using LDAPAuthenticator to authenticate users. This all works well now, with one exception: Every user is sharing the same folder for their notebooks, C:\Users\Public\Public Documents. Can anyone help me find the configuration options I need to tweak to get separate folders for each user? My jupyterhub_config.py:

c.JupyterHub.authenticator_class = 'ldapauthenticator.LDAPAuthenticator'
c.LDAPAuthenticator.server_address = 'theserver'
c.LDAPAuthenticator.server_port = 3268
c.LDAPAuthenticator.lookup_dn = True
c.LDAPAuthenticator.lookup_dn_search_filter = '({login_attr}={login})'
c.LDAPAuthenticator.lookup_dn_search_user = 'CN=theuser,OU=Users,OU=mygroup,DC=mydomain,DC=com'
c.LDAPAuthenticator.lookup_dn_search_password = 'thepassword'
c.LDAPAuthenticator.user_search_base = 'DC=mydomain,DC=com'
c.LDAPAuthenticator.user_attribute = 'sAMAccountName'
c.LDAPAuthenticator.lookup_dn_user_dn_attribute = 'cn'
c.LDAPAuthenticator.escape_userdn = False
c.LDAPAuthenticator.bind_dn_template = '{username}'
c.JupyterHub.port = 80
c.JupyterHub.spawner_class = 'winlocalprocessspawner.WinLocalProcessSpawner'
c.Spawner.default_url = '/lab'
c.Authenticator.admin_users = {'my username'}

Selecting the folder is not the job
LDAPAuthenticator but instead of the winlocalprocessspawner. You might check their manual.