Cloud Poodll Assignment Submission is a normal Moodle plugin and can be installed in the normal way. Visit the plugin's page on Moodle.org to get started: https://moodle.org/plugins/assignsubmission_cloudpoodll
After the installation, you will arrive at the plugin settings page. You can leave most of the settings as their defaults. But you must enter your Poodll API user and secret. This can also be done later at:
Site administration -> Plugins -> Activity modules -> Assignment -> Submission Plugins ->Cloud Poodll submis
You can get your Poodll API user and secret from the Poodll member's area at: https://poodll.com/member
If you do not have an account yet. Please take a free trial at:
https://poodll.com/register/poodll-3-trial/
At that time be sure to also register your Moodle site URL. See here for more details: