I can't seem to get the stained glass mammoth to go into the window. Tried it several different ways...window open, closed partly with the right adjustment etc. I looked on youtube and watched a scene of the process and I don't see anything I'm doing wrong. Any suggestions?

Be sure to have read the scroll given to you by the monk. That is the clue.

Malcolm stated:
First look through the mosaic (you see the entire town of Romansburg) and put the stained-glass mammoth onto the window. Now experiment with the flaps to see what happens. Adjusting them in the correct sequence (bottom, left, top and then right) causes the light to shine on the mammoth's eye on a mosaic on the opposite wall.

See if that works for you.

Thanks for the suggestion MaG. I did that but it didn't work. When I take the glass from inventory it appears at the bottom left of my screen, just as the youtube video scene shows. Supposedly all I should have to do is click on the window at that point but it simply won't go in. Tried it with the window open in close up, backed off with the window adjusted for correct focus, clicked on the glass while in the bottom left corner, etc. Nothing.

Hi kl604,

Did you do this, it sounds a bit more involved:
Read the scroll in inventory. Right click, click on documents, click on eye and then click on documents.

Did you also look through the window first to see the view of Romansbourg beyond?