I believe you would create a referenceAlias on a quest (set to start at game start) which then contains the package you wish to place on the actor. You can also attach scripts to actors in this manner as well.
If you attach your script to that quest and then add a property to it of type "referenceAlias", you can then do a: myRefProperty.ForceRefTo(myRef). The actor you pointed it at will then get the package and any scripts attached to the reference alias.
In the reference alias properties you can tick the flag "optional" and this allows you to leave the initial target blank (otherwise it will crash the quest on startup).