The user directory is by default located in "My Documents\stickman".
This folder contains figure packages and language files.
To change the user directory, you need to be logged in as an administrator user.
Open Stickman, then click Edit->Computer Lab Preferences...
This option will not be visible for non-administrator users.
A new window will appear.
Check "Override User Directory" and click [...] button to select a folder.
Click OK and then close Stickman. Next time you open it the changes will take effect.