This module allows us to add/remove seat reservation and calculate total charge dynamically using Knockout JS.
Copy Knockout module and put it in : app/code/Thienphucvx/Knockout
Run: enable module in commandline in root folder:
php bin/magento module:enable Thienphucvx_Knockout
php bin/magento setup:upgrade
Access demo url : http://your_locahost/knockout/index/view