A user interface for an agent of a call center comprises a transaction menu that lists possible transactions that the agent can fulfill. Multiple transactions selected by the agent from the transaction menu are ordered into a first sequence of agent-selected transactions that are to be fulfilled in a call, and the first sequence is displayed. A selection of at least one additional transaction from the transaction menu is received after the agent has begun to address one of the agent-selected transactions from the first sequence but before the agent has completed all of the agent-selected transactions from the first sequence. Uncompleted ones of the agent-selected transactions including the at least one additional transaction are ordered into a second sequence of agent-selected transactions, and the second sequence is displayed.