To hide a slab in your design in Infurnia, follow these steps:
Select the object that you want to hide.
Access the layer settings for the object. This can be done by accessing the "Layer" section in the design panel on the left side.
Change the layer of the object to a layer of your choice. For hiding purposes, you might want to assign it to a "hidden" layer, or you can create a different layer for this purpose.
Once you've assigned the object to the desired layer, you can manage the visibility of that layer in the layer settings.
Go to the layer sets or layer visibility settings in the bottom left of your screen under "Global Settings and Preferences".
Find the layer that you assigned the object to, such as "hidden."
Turn off the visibility of the "hidden" layer by clicking on the eye option next to the layer name. This action will hide the object in your design.
By following these steps, you can effectively hide a slab or any other object in your Infurnia design by assigning it to a non-visible layer and toggling the visibility of that layer in the layer settings.