CET has a number of features for zooming in or out in different ways. They can all be found on the 2D and 3D toolbars:

Zoom

Is used to zoom in or out gradually in the drawing area. To zoom, left click on the zoom button, then left click and drag up or down in your drawing view. Dragging up will zoom in and dragging down will zoom out.

Zoom in Selected Group

This tool is used to quickly zoom in on a group of objects in the drawing area that are selected together. This feature is accessed from the toolbars above both the 2D and 3D views. For this feature to be activated, you have to have a selection in the drawing area.

Follow these steps:

1. Select the component(s) you want to zoom in on. On the 2D or 3D toolbar, the Zoom in Selected Group button is activated.
2. Click it. The selected component is shown in a close-up.

There are many other ways to zoom in the 2D drawing view as seen in this article.

Zoom to fit

Use this tool to have an overall view of all the objects you have placed in the drawing area. This feature is found on the toolbars above both the 2D and 3D views in CET. If you have lost the overview of your floor plan, click once on Zoom to fit. All objects in the drawing area are now shown.

Right-click in the 2D or 3D drawing area to get the same feature from the context menu.