In the model explorer or 3D view, select the wall fitting to be modified as the CE. On the WALLLS AND FLOORS tab, in the Modify group, click Fitting, select Wall Fitting from the drop-down list to display the Wall Fitting window.

By default, Modify CE is shown in the drop-down menu and the CE is described. The functionality available from the window is identical to Wall Fittings window which is used in the creation of a wall fitting. Refer to Create Wall Fittings for more information.