Licensing API - how to create a 'Premium developer - Unlimited Viewers' plan

We have integrated the Licensing API (https://docs.microsoft.com/en-gb/power-bi/developer/visuals/licensing-api#licensing-api) the question is how can we create a plan like 'Premium  Named Developer Licence' that will be not concurrent and that offers Unlimited Viewers Rights, which ensures that no license assignment for users is required.