Methods and apparatus to manage conference calls are described. An example method includes classifying participants of the conference call in a hierarchy according to respective priority values; detecting an attempt of a participants to speak at a same time; detecting which one of the participants has a lower priority ranking; blocking an audio signal of the one of the participants having the lower priority ranking; placing an identifier associated with the blocked one of the participants in a queue; organizing the queue according to a behavior-based policy by comparing an utterance of a current speaker to a keyword associated with the conference call to determine a relevancy of the utterance; and increasing a point total associated with the current speaker in response to determining that the utterance is substantially relevant, and decreasing the point total associated with the current speaker in response to determining that the utterance is substantially irrelevant.