Start and end-panel differs from the rest. How do I make that happen?

[Kamelite]

I have a curtain wall where the columns have fixed sizes. However, I ned to make the first and the last one with different width. As the images shows, 2400mm is the width of every panel except the first and the last, that needs to be 1975mm.

How do I go about and make such a curtain wall?

.Thanks

.Kamelite

Operating system used: Windows 10

[JeffH]

Within the curtainwall scheme settings, under pattern origin there are a few option.  Align to center may be the option you are looking for.

You may have to do some math to the right, to half the panel length, if the mullion isn't exactly where you want it still.

[Kamelite]

I just discovered that the panels in each end is different, the one in the picture is 1975mm wide, , the one on the other side is just 1600 mm wide...

.Kamelite

[David Maudlin]

Kamelite:

One way to do this is by Elevation View. Go to the View that has the Curtain Wall, select the CW and press the "Edit" button to go into Edit Mode. In the upper left panel, make the Scheme Grid visible. Now move the scheme grid elements for the end panels, the mullions will follow.

David