Hi Dennis,
Unfortunately this is not possible at the moment - an event can only be displayed in one resources row. If you want to display it in multiple rows, you will need to have it twice in the data source.
I'm afraid what you would like to would not work generally (the linked resources don't have to be adjacent).
If you want to display the events this way, it will be necessary to generate multiple events from a single source record (one per link).
Anyway, it would be possible to add an event-resource link by "copying" the event. Please see the following howto:
http://kb.daypilot.org/15338/how-to-copy-events-using-drag-drop-ctrl-key/
It is also possible to make such events be selected together - if you hook the EventSelect event you can find other events from the group and select/unselect them as well.