Yes, that is possible, by sharing your user name and password. Others can then register using the same login (name and password) to log into your Plug&View account and see the camera image at the same time from different PCs or mobile devices.
Multiple users can see the same camera image, or access the same camera simultaneously. This function can be useful when all members of a family would like to access the same camera and when, for example, both parents want to access the camera independently of each other from the office to check on things on the home front. For your own and you family’s protection, please make sure you only share your login details with especially trustworthy persons.