One option would be to follow the directions here. You should follow the instructions for "Ubuntu 18.04" / "bionic" (since that is the operating system of the QuickStart).
https://docs.rstudio.com/resources/r/install-r-binary/
Note that you shouldn't need some of the system dependencies, since R is already installed, and you are just adding a version.
That is probably the easiest recommended path for use with our professional products
Thanks for the great questions! Please let us know how it goes!!