I have Postgresql 12 installed. For a current task I need to install the 11th version too, temporarily, and in such a way that it won't interferer with the 12th version. The latter should keep working normaly and remain the main and default version and not see the version 11.
Preferably, install it into my home directory so that I'll be able to remove it easily later on by removing its directory only.
How can I do it with less hassle?