In the QAT, click the Appearance list and at the bottom select the library where the appearance is located. The list updates to show the contents of the selected library.
In the graphics area, select the component.
Note: Use CTRL+Select to build a selection set, then proceed with the next step.
In the QAT Appearance list, select the appearance to assign to the component.
Alternate workflow
On the Tools tab Material and Appearance panel click Appearance . The Appearance Browser displays.
In the graphics area, select the component.
In the Appearance Browser, Library section, select the library that contains the appearance you want to apply.
In the library appearance list, pause the cursor over different appearances to preview them on the selection.
Right-click an appearance and click Assign to Selection. Alternatively, click to add the appearance to the document. Then click the document appearance to assign it to the selection.