There are two columns, one column lists the district and schools in a sub folder.  Drag and drop the district(s) or school(s) that the user would have access to into the column on the right.  You can make a district/school the default.  That means when the student logs in that will be the district/school readily available to that user.  To toggle between the other district/schools the user should click on the school house in the upper right corner and select the district/school to access.

 

First select the district:

        

 

Second select the school is the user is assigned as a School Admin:

        

 

Third, select the button "Assign Selected Provider" button

 

Within the list of assigned Sites there are a few options:

 

'Read Only' checkbox:  This will make students chosen from the assigned site available only as Read Only Access.

Default Login:  The selected site will be the initial view scope for the user when they login.

Schoolwide Provider Role:  This is a special function for Providers who serve an entire School or even an entire District.  Selecting a role here will have this person appear as a Provider on forms, lists, and other areas of SIRAS for all students at that site.