Preview With Displace: If it exists, use displacement on the preview object.
Displace Strength: Displace Strength on the preview object.
Preview With Bloom: Adds a Bloom (Compositing) effect to the render of the icon
Bloom Strength: Set the bloom strength on the preview icon
Bloom Size: Set bloom size on the preview icon
Material Name: Here you can enter the name of the material on the fly (By default it is the exact one itself)
Material Info: Here if you want you can enter your data
Author: You can enter your name
Website Name: You can enter your website name
Author Website: If you fill in this field with a valid URL, a button will be shown on “Material Info” with a button that will send to your site / social
License: Here you should enter the license type if you want to sell or distribute your materials. The end user will want to know under what license the material.
License Link: If you want to use Creative Commons, knowing the license type link is always useful.