Hello @user944 and welcome to our Community 
Unfortunately, at the moment, there is no option to add new templates to our app 
Please accept my sincere apologies!
This is a wonderful idea and I’m happy to say that we’ve successfully added it to our Wishlist. Please vote for this feature to get a notification upon its release here - New templates for the widget
Feel free to leave a comment there or any insights you have as it helps us improve our apps 