The Layers option can be used to hide or show multiple items by their category.
1. To hide items by their category, go to View Layers deselect the Item Category [e.g., walls].
[This will hide all items falling within the "Walls" Category]
2. To show the hidden layer [Walls] again, go to View Layers select the Item Category.
[This will show all items falling within the "Walls" Category]
Please beware that if you hide or show a layer in a main named view, this could potentially affect the state of the layer in another named view if the layer settings are shared across named view
See our Named View article for further information.
Quick Tip: To select/deselect multiple item categories, press the CTRL key on your keyboard and left click on the desired item categories.