So you have an approved video template saved, and you're ready to really start producing... Easy!
Select template in the TEMPLATES tab, and click USE THIS TEMPLATE
Rather than starting from an empty canvas, you have all the composition, scene design, effects, music, transition etc, all saved and ready to go.
All you need to do is FIND AND REPLACE THE MEDIA
Once that's done, open up the assets and REPLACE THE TEXT
Just like that - you're good to go!