1. Lock Folder

In windows explorer, click right button on the target folder, context menu will be popped up:

Select "Lock Folder with See and Lock", the target folder will be locked, if you have checked "Hide" button in See&Lock Program, then the target folder will disappeared after it was locked. If you did not checked "Hide" button in See&Lock Program, then the target folder will be showed as a lock icon:

2. Unlock Folder

In windows explorer, double click on a locked folder, then a dialog will be popped up to ask you enter password:

If you are using tried version, please enter default password "collage", the tried version don't allow user to change password, after enter correct password, the target folder will be unlocked.
If you have checked "Hide" button in See&Lock program, locked folder could not be seen in windows explorer. Please run the see&lock program, and push the "List" button to list all locked folder and unlocked the target locked folder.

Left window is files tree window, middle window is thumbnails window, right window is viewed window. Selects a folder in files tree, all image files in the folder will be showed in thumbnail window, selects a thumbnail in thumbnail window, it will be showed in viewed window.
On top part of the interface, there is a line of button, they are: Lock, Unlock, View, List, Hide, Password, To Tray.
Lock. Selects a folder in files tree window, then push "Lock" button, the target folder will be locked.
Unlock. Selects a locked folder in files tree window, then push "Unlock" button, the Enter Password dialog will be popped up to let you enter password, after you enter correct password, the target folder will be unlocked.
View. Selects a locked folder in files tree, then push the "View" button, the Enter Password dialog will be popped up to let you enter password, after you enter correct password, all images files in the target folder will be showed in thumbnail window. Here, the target folder was not be unlocked, it could not be viewed in window explorer.
List. Push "List" button, the Enter Password dialog will be popped up to let you enter password, after you enter correct password, all locked folder on your computer will be listed out in a dialog as following figure, selects one or more locked folder in the dialog, then push "Unlock" button, those folder will be unlocked.

Hide. Checks "Hide" button, then all locked folder will disappear, they will not be seen in files tree of See&Lock, or in windows explorer. However, you could list them by pushing "List" button.
Password. Push "Password" button to change password of Folder Lock.
To Tray. Push "To Tray" button, the program will be minimized to desktop tray.

Right click on the "See and Lock" button in desktop tray, following menu will be popped up: