For any organizations holding the "old" DAI (aka SAI) token, the Aragon client has begun showing the correct name following a release around 2019-11-25.
For organizations holding SAI, there are two recommended paths to upgrade to Multi-Collateral DAI:
Transfer the SAI into an external account or multisig contract that you control. From there, use the migration interface at migrate.makerdao.com to exchange SAI into DAI, and deposit the new DAI back into your organization
Install an Agent app, if your organization has not yet installed one. Transfer SAI into the Agent app, set up the required permissions to allow interactions with the Agent app, and use migrate.makerdao.com via Frame.
For organizations holding old SAI Collateralized Debt Position (CDPs), the recommended migration paths are similar if the organization was only holding SAI: transfer the organization's SAI CDP ownership to an external account, multisig, or installed Agent app that you can interact with, and use the migrate.makerdao.com interface. In this scenario, ensure that the account with ownership over the SAI CDP also holds enough $MKR to pay back any owed stability fees.
Organizations that want to create new DAI Vaults should interact with the Oasis Trade application using an installed Agent app and Frame.