The Convious Partner ID (or slug) is your unique Convious ID. The ID can be found in your personal script which is always available in your partner dashboard: https://dashboard.convious.com/account/
The Convious Partner ID is the part in the script after the k=. See the example below where the Convious Partner ID is "your_company_name"
Example script:
<!-- start Convious Code -->
<script id="convious_loader" src="https://client.convious-app.com/loader.js?k=your_company_name"></script>
<!-- end Convious Code -->