is it possible to esteblish a connection from the Host to the Viewer instead from Viewer to Host?
Yes, this can be done using the Callback connection feature. The Callback connection feature allows you to connect to the remote Host using Direct connection when the Host is not accessible by its IP address. The Viewer's external IP address is used to establish a connection instead. Here's a step-by-step guide on how to use the Callback connection feature: https://www.remoteutilities.com/support/docs/callback-connection/ Please note that in order to use the Callback connection, your Viewer workstation must be accessible by an external IP address.
In case if you mean switching the screens during the remote session, i.e. displaying the Viewer's screen on the remote Host's side - unfortunately, we do not provide such feature. In this scenario, you can also use Agent and Portable Viewer as temporary solutions if the connection is meant for one-time use.