1. A computer-implemented method, comprising: providing, by a device, a view of an environment of a first user; receiving, by the device, an instruction to display a virtual marker within the view of the environment of the first user, wherein the instruction comprises a coordinate value that specifies a first position of the virtual marker in a three-dimensional (3D) space of an environment of a second user that is different from the environment of the first user, and the first position was determined based on the second user's interaction with a 3D model of at least a portion of the environment of the first user that includes a 3D model of a first physical object located in the environment of the first user; mapping the coordinate value from the 3D space of the environment of the second user to a 3D space of the environment of the first user to determine a second position of the virtual marker in the 3D space of the environment of the first user that corresponds to the first position of the virtual marker in the 3D space of the environment of the second user; displaying, by the device and within the view of the environment of the first user, the virtual marker at the second position of the environment of the first user, wherein the virtual marker prompts the first user to manipulate the first physical object that is located in the environment of the first user, wherein the first physical object at least partially appears within the view of the environment of the first user; detecting, by the device, an action taken by the first user to manipulate the first physical object according to the prompt indicated by the virtual marker, including determining coordinates of a second physical object that the first user brought into proximity of or contact with the first physical object in taking the action to manipulate the first physical object transmitting, to a computing system of the second user, information that describes the coordinates of the second physical object that the first user brought into proximity of or contact with the first physical object in taking the action to manipulate the first physical object receiving, by the device and from the computing system of the second user, an indication of whether the action taken by the first user to manipulate the first physical object satisfies a criterion; and displaying, by the device and within the view of the environment of the first user, the indication of whether the action taken by the first user to manipulate the first physical object satisfies the criterion.