A programmable diverse interaction code module (DIM) in an enterprise-hosted multimedia call center (MMCC) for facilitates and monitors diverse interactions between parties communicating through the MMCC, and includes a database interface for access to an MMCC data repository; and an association facility for associating parties to transactions with agents and projects. The association facility assigns association identifiers to parties according to defined projects and issues, and the database interface stores transactions in the data repository. Parties to transactions include customers and business associates remote from the MMCC and agents and knowledge workers local to the MMCC, and transactions are supported in any combination between any parties. The database interface stores transactions on threaded strings, the threading associated by one or more of project, issue, and chronology, and the DIM is programmable to apply to a single enterprise project. Transactions are displayable in some cases on threaded strings, and lower-order transactions may be hidden on some strings. Methods for practicing the invention re taught as well.