Presto Add-On for SharePoint (P4S) adds specific actions to SharePoint farms and sites. It also defines a Mashup Site template which you or users can use and two new Web Parts for mashups and apps respectively.

To begin configuration, you must first enable P4S features for each SharePoint farm and site collection where users should be allowed to work with mashups and apps. See Enabling P4S Features in Farms and Enabling P4S Web Parts for Site Collections.

You can also choose to manually enable P4S features for individual sites that are not Mashup Sites. See Manually Enabling P4S Features for a Site.