A method implemented by one or more processors, comprising: setting an automated assistant (118,119) to a conference mode; in the conference mode: capturing, by a microphone of each of a plurality of conference computing devices capable of executing all or part of the automated assistant, multiple distinct spoken utterances, wherein the multiple distinct spoken utterances are provided by multiple participants of a meeting facilitated by the plurality of conference computing devices; performing, by the automated assistant implemented at least in part on one or more of the conference computing devices, speech-to-text processing (114, 117) on the multiple distinct spoken utterances to generate text without requiring explicit invocation of the automated assistant; performing, by the automated assistant, semantic processing on text generated by the speech-to-text processing without requiring an explicit command from a participant; based on the semantic processing, generating, by the automated assistant, output data pertinent to the spoken utterances; identifying, by the automated assistant, respective output modalities used by the plurality of conference computing devices; outputting, by the automated assistant, during the meeting and while the automated assistant is in the conference mode, the output data pertinent to the multiple distinct spoken utterances at a respective frequency, that is related to the respective identified output modalities of the plurality of conference computing devices; determining, by the automated assistant, that the meeting has concluded; and in response to determining that the meeting has concluded, setting the automated assistant to a non-conference mode in which explicit invocation of the automated assistant is required before performing speech-to-text processing and semantic processing on individual spoken utterances. setting an automated assistant (118,119) to a conference mode; in the conference mode: capturing, by a microphone of each of a plurality of conference computing devices capable of executing all or part of the automated assistant, multiple distinct spoken utterances, wherein the multiple distinct spoken utterances are provided by multiple participants of a meeting facilitated by the plurality of conference computing devices; performing, by the automated assistant implemented at least in part on one or more of the conference computing devices, speech-to-text processing (114, 117) on the multiple distinct spoken utterances to generate text without requiring explicit invocation of the automated assistant; performing, by the automated assistant, semantic processing on text generated by the speech-to-text processing without requiring an explicit command from a participant; based on the semantic processing, generating, by the automated assistant, output data pertinent to the spoken utterances; identifying, by the automated assistant, respective output modalities used by the plurality of conference computing devices; outputting, by the automated assistant, during the meeting and while the automated assistant is in the conference mode, the output data pertinent to the multiple distinct spoken utterances at a respective frequency, that is related to the respective identified output modalities of the plurality of conference computing devices; determining, by the automated assistant, that the meeting has concluded; and in response to determining that the meeting has concluded, setting the automated assistant to a non-conference mode in which explicit invocation of the automated assistant is required before performing speech-to-text processing and semantic processing on individual spoken utterances. capturing, by a microphone of each of a plurality of conference computing devices capable of executing all or part of the automated assistant, multiple distinct spoken utterances, wherein the multiple distinct spoken utterances are provided by multiple participants of a meeting facilitated by the plurality of conference computing devices; performing, by the automated assistant implemented at least in part on one or more of the conference computing devices, speech-to-text processing (114, 117) on the multiple distinct spoken utterances to generate text without requiring explicit invocation of the automated assistant; performing, by the automated assistant, semantic processing on text generated by the speech-to-text processing without requiring an explicit command from a participant; based on the semantic processing, generating, by the automated assistant, output data pertinent to the spoken utterances; identifying, by the automated assistant, respective output modalities used by the plurality of conference computing devices; outputting, by the automated assistant, during the meeting and while the automated assistant is in the conference mode, the output data pertinent to the multiple distinct spoken utterances at a respective frequency, that is related to the respective identified output modalities of the plurality of conference computing devices; determining, by the automated assistant, that the meeting has concluded; and in response to determining that the meeting has concluded, setting the automated assistant to a non-conference mode in which explicit invocation of the automated assistant is required before performing speech-to-text processing and semantic processing on individual spoken utterances.