Materials
Found on the Catalog panel on the left side of the screen.
The Materials icon
evokes material catalog selections for walls, floors, and ceilings.
Select the desired finish from the catalog and left click to apply it inside the project.
To narrow down the selection of materials, click on the down arrow beside the Filters to reveal the filtering options for each subgroup.
By selecting a filtering option, the catalog choices will shrink to reveal just what you are searching for. Select Clear to remove the filtering option.