Options Get Icons

Download and install an icon pack.

Operations

Search button in the upper-right corner
Click = Filter the list by searching for input text in file information.
Right-click = Clear the filter.

Install button
Download and install the icon pack.

Delete button
Uninstalled the icon pack from your TE.

Sort button
Non-functional.

Mouse
Middle-click then move up/down = Scroll the list.

Alternative

1.  Download an icon pack ZIP file from TE web site.
2.  Install the icon pack by unpacking the ZIP file to "icons" folder under your TE folder.