Which function does not exist in the process of connecting social accounts?

The function that does not exist in the process of connecting social accounts is the ability to sync with external platforms. When managing social accounts within Marketing Cloud, the primary activities involve directly adding accounts, searching or selecting from a predefined list of social networks, and the potential to add these accounts to multiple workspaces for broader management and accessibility.

Syncing with external platforms typically implies ongoing data exchange or integration capabilities which are not part of the initial step of merely connecting accounts. The focus in the account connection process is on establishing the link directly within the platform rather than integrating or continuously syncing data with other systems.

In contrast, the ability to add new accounts directly allows users to expand their social media management easily, while searching or selecting from a list provides a streamlined method of choosing which social accounts to connect. The option to add accounts to multiple workspaces enhances the organization of various marketing initiatives, allowing for greater collaboration and structure within the Marketing Cloud environment.