Help Building a Chrome Extension

Hi, I'm looking to build a chrome extension for AWS which automatically adds tags to pages in which you create new resources to save users from having to pre-populate common tags all the time. I need someone to help get the project started by building a really simple proof of concept which demonstrates the following with a chrome extension: 1. Identifying if a page contains the option to add tags (see image)... and then... 2. Adding new tags with a couple of test values Example tagging page in question: [login to view URL]: Options for additional work should you be able to help with this inital part of the project.