You can change all security-related settings in Security Category. Windows logon:
In “windows logon”, you can determine whether remote users can connect to the local
computer using their Windows credentials instead of the TeamViewer password.
Not allowed
Default setting. An authentication is possible only with the TeamViewer password.
Allowed for administrators only
Windows administrators can connect with their admin credentials.
Allowed for all users
All users of the computer can connect via the Windows authentication routine.