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I would like to create a quote with multiple plans, not only one?
Please be informed that Quotes can be created for your customers for a new subscription, changes to existing subscriptions (such as plan upgrades, applying add-ons, and so on), and one-time charges. Please refer to this Doc to know more.
Currently, it can be created only for a particular Plan if creating a new subscription. However, if you can create a Quote for Changing Subscription, then you can upgrade or change the plan but the plan associated can only be one.
You always have the option to add multiple Charges and recurring addons to it.
How to configure quotes in Chargebee?