Mobile Apps - adding nodes

I get through step 7, but on step 8 the "Add Node" field is empty.  Anyone have an idea why?

Thanks for any help.

1.Create new role "UMX|MBL|EAM_MBL_MAINT_APP_ACCESS"

2.You need to attach this role to the responsibilities which you want the users to see.

3.Login to the instance using system administrator credentials.

4.Navigate to "User Management" responsibility.

5.Click on "Roles & Role Inheritance"

6.Search for the responsibility you want this role to be assigned for.

7.Click on the "View In Hierarchy" Icon.

8.Click on "Add Node" Icon.

9.You will see a search page.

10.Search for the role code specified in step 1 and select the role from the result set.