A computing apparatus configured in the communication system to store data about advisers, including availability status of the advisers for real time communications with customers, ratings of the advisers by prior customers, compensate rates of the advisers, probability of being connected within a period of time for real time communication with customers, etc. The computing apparatus customizes the selection of lists of advisers for presentation to customers and/or the sequences of the lists to reduce collisions in concurrent requests for connections to same advisers for real time communication connections. The customization may include randomizing top portions of the lists, selecting and/or ranking the advisers in real time based on probability of advisers being connected within a period of time for real time communication with customers, etc.