We usually create a user 2yetis and a group 2yetis. Please refer to your Linux guide on how to create users and groups. This is an optional step. Uvuyo can be installed using any user / group on the system.
Before you run the installer you need to setup a directory where the product should be installed in. We recommend using the directory /opt/2yetis/uvuyo on Linux systems, but you are free to create your custom directory. Make sure that the user installing the product has access to the directory created.