In community, version should be done by security grants in the parent folders
/okm:root/Project-1
/okm:root/Project-2
In the professional version we have multitenancy option what isolates completely data between tenants. The users can switch to some specifics tenants it is the hardest rule, but inessential with the security you can have the same. Are few differences like the separated search engine ( in security-based might have some issue if you do not set right security ) and list of users ( tenant isolates the list ) for example, among other things.
/okm:root/Project-1
/okm:root/Project-2
In the professional version we have multitenancy option what isolates completely data between tenants. The users can switch to some specifics tenants it is the hardest rule, but inessential with the security you can have the same. Are few differences like the separated search engine ( in security-based might have some issue if you do not set right security ) and list of users ( tenant isolates the list ) for example, among other things.