SYMPTOM:
A multi-layout document is a Report Services Document with more than one layout or tab as in the image below:

In some circumstances, the user may want to use URL API to go from one layout to another.
ACTION:
To configure a link for opening a specific layout of a multi-layout document in Strategy Mobile 9.4.x or later for iPhone and iPad, follow these steps:

An example URL can be found below:
Main.aspx?&src=Main.aspx.2048001&evt=2048001&visMode=0&documentID=<objectID>¤tViewMedia=2&layoutIndex=<layout>