Hi Tosin 02, 

What exactly are you trying to show in this model? The different stages of how a product works, what touch points it has with systems and people? 

To be fair and depending on your answer to my question above, a template may not be that suitable. Do you have Microsoft Visio in your company Software suite? If you do, you can use that and build your own. 

There are lots of different software types that do a similar thing, so any are as good as each other.