Have tried 'walk thru' on setting the clock in the square, but the lady robot goes in the door & out again & I just remain there !
When she gets up from her seat you then see that there's a note on the wall where she was sitting.
Jot down the information contained therein and use it well.
![Wink](http://amanita-design.net/forum/Smileys/default/wink.gif)
P.S. FYI, all the Walkthrough images are archived
here on The Forum (in the General Machinarium topics > Machinarium WALKTHROUGH section)