Modify wordpress plugin

I have a custom made plugin that fetches a txt file from an external source every 15 minutes, stores it locally and uses the local file to output a value. This value can be shown to visitors using shortcodes. In this case it outputs a KP value. (rounded to the nearest whole number). What i need is for the plugin to fetch a second value from the same txt file and create a second set of shortcodes that outputs this value. I believe this is a very simple job. Its easy to modify the code to get the other value, but i want it to fetch both. The plugin also have an automated email alert service in it. This is something i want to be removed from the code as it is not needed. Job summary: - Make the plugin add an extra set of shortcode that outputs a second value from the txt file. - Remove email alert, newsletter functionality, and and all related code that is not needed. - Add a third shortcode that shows when .txt file was fetched from external source. This should be visitors local time. (This one can be optional if it requires a lot of work that brings the price up, but i really want it.) Only bid if you know how to do this, and please ask questions before bidding if anything is unclear. I have an budget for $20 on this.