If you're interested in taking the integrations to the next level,
then feel free to check these GitHub repository links.
Quite a lot of different integrations like MISP,
Cortex, Digital Shadows, CrowdStrike, Synapse,
curator to TheHive,
and a lot of other ones that may fit the bill depending on
what your organizational needs and appetite are relating to
alerts and associated investigations.
Definitely feel free to have a look at the official page where an
abundance of information awaits in order for you to be able to
configure TheHive up to what you like.
The GitHub repository in TheHive blog are also additional resources of
interest from the individuals officially supporting TheHive.
Installation wise,
feel free to take a look at McHughSecurity blogs as they have an abundance
of information relating to integrating TheHive with MISP,
with Cortex Analyzers,
and quite a lot of other components that might be very beneficial for you.