what profile option allows for managing the recent search views?

Summary:

There is a profile that can be set to determine how many days your past searches are saved, the default being 90 days.  We would like to know what that profile name is so we can adjust it.  

When you do a search in RSSP, the past search terms are more prominent in the pick list, we want to try clearing them sooner, so users get a fresher look.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):