Hi
Currently the projects doesn't provide instructions on how to install OpenAM. It asks for it to be installed on a specific version. There is a maintained OpenAM fork from the Open Identity Platform. It has a lot more activity than the community version from ForgeRock and it's free-software. Maybe you could declare that version as the official one and provide help on the installation from the autoinstall and docs. The community version of ForgeRock has a single contributor and it is really difficult to install.