I am looking to migrate my existing Premium accounts to Business Accounts and adding more. Please advise on how to proceed ? Thank You, Dennis
Please go to https://todoist.com/business and click on "Start trial". That's it :-) From now on your account will have a Business status and to make sure you won't pay for Premium again, the remaining value of your existing Premium time will be converted to an account balance so that the first invoice will be partially (or fully) covered from this balance and your credit card will be charged for the remaining amount.
Same applies to your team members - if you invite users who already are Premium, their Premium value will also increase the balance.