Second cms xibo

I would like to create a new xibo cms to work in our domain and therefore have a blank interface with only the media and layouts that concern the new project
Could hosting both cms on the same server have conflict issues?
I also plan to create a sub-site to put the new cms there
being a computer novice, for the installation of xibo cms I did not understand whether to use an old database or create a new one
and if so what is the mysql server hostname (local host)
Thanks for your help

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