By default you can create templates for Leads & Contacts. But if you want to create template for any other object, then you first need to create Template Type for that object from SMS Settings tab of SMS Magic Interact app.Then you can create template for that object by selecting "template type" as that object from SMS Template tab.

 

To configure the template type please goto "http://www.screen-magic.com/sms-templates/" and follow the steps mentioned to configure template type.