The best approach is to go to the MetaClass COMOS_PROJECT and derive a new Metaclass.
The reason is to create a MetaClass that is cut off from this SystemMetaClass, which could be changed during a UBIK update.
To find the MetaClass in {{UBIK}} where View set to „See all“ go to -> SYSROOT -> SYSTEMOBJECT -> COMOS_PROJECT
when View is set to „Content“ you can find it under Namespaces; go to -> {} Comos -> {} Comos.Interface ->COMOS_PROJECT
You can name and describe it as desired, but it is a good Idea to use a name or description that is also in {{COMOS}}.
The Database ID is also the same as in Comos, on the Project settings for Mobile Solutions, the Enterprise Server here is that one from {{UBIK}} like you set up the Notification Endpoint.
Project_ID, Working_Overlay_ID is again form Comos, Project_ID is Mandatory anyway, if you want to connect with an WorkingOverly from Comos this ID is also needed.
The Registration folder is only needet when you want to use XML Files for Objects that are not Classified in Comos.