material Browser bottom left icon

[Anonymous]

Good morning,

I'm sure this question has been several times asked but I do not know how this feature is called, so I cannot search it!

In the tile I wrote how I have been searched it!

I would like to know how can I activate this icon in the picture attached.

Thanks in advanced

[Jason.P]

that is the custom parameters button and it allows you to assign custom parameters to your materials. But only if you have some parameters made up.  It will not be active if you do not have any custom parameters in your project. See the attached link.

https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2015/EN...

[barthbradley]

It could be the No Material button. I can't see it clearly in the screenshot. If you press the No Material button, it returns the Element's Material to "By Category", meaning that the Element will use whatever Material is assigned to the Element Category in Object Styles.  

[bill_gilliss]

Thank you! The light dawns...