Casement window basics

To change the dimensions of a casement window, select the Frame and then change the Width and Height. (You can also select Casement Sash and then change the Width and Height Between Centre Lines.)
To remove the frame (i.e. when just quoting for new sashes), select the Item and then untick New Frame.
To change how the sash is hung, select the Casement Sash and then click one of the options along the bottom.
To change whether the sash opens inwards or outwards, or to choose between flush/stormproof/tilt & turn options, select the Casement Sash and then click the option next to Sash Type. After choosing an option, you can either apply the change to all casement sashes in the drawing, or to the selected sash only.
To change a single casement to a pair of French casements or a floating transom casement/mock sash, select the Casement Sash, then click Change... in the bottom right and choose the relevant option.