Correct setup for “sub-organisers”?

Hello! We are currently testing the Free version of the plugin, looking at a High Powered subscription going forward, if that is suitable for our purposes: We are an NGO with regular activities and events as well as several projects, which have their own events. What would be the correct setup to be able to display into one Calendar List or Calendar ALL events that are organised by us (general events and project events), but preferably so that users could identify from the calendar that an event is organised by a specific project in our organisation?
I have the feeling that it might need to be set up on the Eventbrite side with multiple accounts which would then all be added to the plugin but I’m not quite sure if I interpret correctly the plugin’s capabilities, or if Eventbrite itself offers possibilities to differentiate events under a single account. I noticed in the help text that some API keys can have data from several organisations, but not sure if I understood it correctly. Would appreciate any advice about this, or advice as to where to ask regarding Eventbrite itself (the EB documentation wasn’t much help for this case). TIA!