To use with Random.org follow the instructions below.
Simply use as data or workflow action

Parameters:
See documentation under each parameter field.

To use this plugin with Random.org you need to get an API key

Go to https://www.random.org/, create an account. You will be allowed to access once you have successfully verified your email address and activated your account.

Click on Your Account and then click on Account Overview, You will see API Services. You click Create a new API Key to create a random string generator for your app.

Copy the API key and post it in the fields provided in the Plugins tab.

To use with Nano ID simply use the "Nano ID - Generate String" Action in your workflows.

You will not require any API key for this method and it still gives very high uniqueness. You can check probability of collision at: https://zelark.github.io/nano-id-cc/

Learn more about Nano ID: https://github.com/ai/nanoid