Fair warning it's not the most user-friendly method and there's likely a friendlier method out there but I knew this would work since it's related to stuff I do at work. Basically it uses
Selenium to automate interaction with the webpage.
I used this plugin:
https://addons.mozilla.org/en-US/firefox/addon/selenium-ide/
and recorded a "test case" which:
* loads the tetra p80 page
* selecting the options I wanted from drop downs and check boxes.
* stopped recording the test case
then i saved the "project" somewhere on my computer.
to use it:
* i click on the "selenium ide" button in my firefox bar
* click the option to "open up a project"
* navigate to where i saved the project
* click on the test in the left-hand sidebar to select it
* click the play button w/o the three stacked lines next to it to "run current test"
doing so will open up a new window to the tetra p80 page and "run the test case" which involves selecting all your options. from there you could proceed to check out since it's just regular browser window.