How to add a central air conditioner on the side of the ceiling trend

To install a ventilation grille, there are two methods:

Method 1: Go to Cloud materialFinishingOtherImprove air circulation, select the ventilation grille and place it on the ceiling.

Method 2: Go to the custom wall and ceiling design. The steps are as follows: First, enter the custom wall and ceiling section. From the material library on the left, find the model in Electrical Appliance - Ventilate, and drag the ventilation grille by left-clicking.