Enhancing a web-based UTM tagging tool - JS, Google apps script

We have a Google Analytics UTM tagging tool that we need to update: [login to view URL] The new version will be deployed on the same Google sites URL and needs to have a top selector allowing selection between the current version and the new one to be developed. The skills needed are Javascript (Vue JS working knowledge), Google Apps Script, HTML, CSS The new version needs to have the following different from the current version: - Campaign Medium dropdown comes below the URLs box with different options (to be provided). These are fed from a G-docs spreadsheet diff in the attached sheet - Traffic Source comes to the right of Campaign Medium. The options for this should be depended on what’s been chosen for Campaign Medium - Goal dropdown comes to the right of Traffic Source with the options to be provided - New Portfolio dropdown should come below with options to be provided - Campaign Details (new dropdown) to the right of Portfolio. This will load the UTM_content options to be provided - Another row below for Campaign Name (remains an open text field) - Network login – stays the same Further details to be provided to chosen bidder.