A computer-implemented method for operation in a computing system comprising a first computing device, a second computing device, a network and a server device, wherein an automated assistant can be initialized at the second computing device and wherein the first computing device, second computing device and the server device communicate through the network, the method comprising: providing, to the server device, credentials of the user; receiving, from the server device, based on the credentials of the user, a directory of computing devices associated with the user, wherein the directory includes the second computing device, the second computing device being selected from the directory of computing devices associated with the user based on one or more capabilities of the automated assistant to cause the second computing device to provide output; receiving, by the first computing device from the server device, instructions for providing a selectable element at a graphical user interface of the first computing device, wherein the selectable element comprises text corresponding to an invocation phrase that transitions the automated assistant into an operating state in which the automated assistant causes application content of an application to be provided at the second computing device, wherein the text of the selectable element corresponding to the invocation phrase relates to the application content and wherein the application content corresponds to graphical content that is provided by the graphical user interface of the first computing device; displaying the selectable element and the text on the graphical user interface of the first computing device; receiving, at the graphical user interface, a selection of the selectable element; causing, in response to receiving the selection of the selectable element, the automated assistant to initialize at the second computing device, and to provide the application content, wherein, while in the operating state, the automated assistant launches the application on the second computing device, displaying a second invocation phrase at the second computing device to inform the user of a further function the automated assistant can perform at the second computing device, responding, by the automated assistant at the second computing device, to a second spoken input comprising the second invocation phrase of the user received via the audio input interface of the second computing device, wherein the responding comprises performing the further function. providing, to the server device, credentials of the user; receiving, from the server device, based on the credentials of the user, a directory of computing devices associated with the user, wherein the directory includes the second computing device, the second computing device being selected from the directory of computing devices associated with the user based on one or more capabilities of the automated assistant to cause the second computing device to provide output; receiving, by the first computing device from the server device, instructions for providing a selectable element at a graphical user interface of the first computing device, wherein the selectable element comprises text corresponding to an invocation phrase that transitions the automated assistant into an operating state in which the automated assistant causes application content of an application to be provided at the second computing device, wherein the text of the selectable element corresponding to the invocation phrase relates to the application content and wherein the application content corresponds to graphical content that is provided by the graphical user interface of the first computing device; displaying the selectable element and the text on the graphical user interface of the first computing device; receiving, at the graphical user interface, a selection of the selectable element; causing, in response to receiving the selection of the selectable element, the automated assistant to initialize at the second computing device, and to provide the application content, wherein, while in the operating state, the automated assistant launches the application on the second computing device, displaying a second invocation phrase at the second computing device to inform the user of a further function the automated assistant can perform at the second computing device, responding, by the automated assistant at the second computing device, to a second spoken input comprising the second invocation phrase of the user received via the audio input interface of the second computing device, wherein the responding comprises performing the further function.