Go to your Drupal root folder, and extract the Seers module in "module" folder. The extracted folder’s name will be "seers_cookie_consent_privacy_policy"
In admin panel, go to "Manage > Extend , and search for “Seers Cookie Consent" in search bar. Select and install the plugin.
Go to "Manage > Configuration" and click on "Seers Cookie Consent Form".
You will see the message "You saved the configuration".
Configure the consent banner, and copy-paste its code into any page or your website template.