First open the advanced search page.
This page can be found at /search/advanced.aspx
Edit the page
Edit the webpart
Open the builder window to edit properties
Once in the builder window, select all contents by hitting CTRL‑A and copy it with CRTL‑C
Open Visual Studio (or any other editor) and create a new XML file.
We are not going to save this file but pasting it into visual studio formats the text so it is outlined properly.
Remove the default header. (CTRL‑A and DEL)
And paste the XML from the webpart
Looks much better doesn’t it?
First we’ll create a new ResultType
Select the “Documents” ResultType. Copy and past it at the end of the ResultTypes section.
Rename “Documents”. In this case we are going to use “Manuscripts”
Next we’ll create a new property definition
Add the new Property Definition to the new ResultType
Copy all text and paste it back into the Builder window in SharePoint
And click OK
Click OK to save the changes to the Webpart and save the page.
Don’t forget to check in and publish the page.