Just follow these steps:
1: Sign up for an account with https://basiq.io
Choose New API key
Enter a name and select create key to obtain your API key
Once the new API Key is created, the remaining has to be done on Ezidox side
2: Activate Basiq integration
Go to Settings -> Integrations, and select activate Basiq.
Paste the API key and save the settings
3: Create a Basiq enabled custom document
Go to Settings -> Custom Document
Click on "Create New"; enter name, category and description (optional)
In the "Integration" dropdown, select Basiq and save the settings.
Once created, you can then add it to your custom template
Now create your Document Request, and don't forget to include your Basiq document!