How to call a procedure in the name of another entity

I'm making a questing mod, and the procedure I use to set the quests randomly uses event/target entity for everything. However, in a command that lets you reroll the quest, the entity iterator is the player being affected, rather than the event/target entity like in the first procedure. How do I call the first procedure from the second procedure so that the entity iterator becomes the event/target entity in the first command? (In the second procedure, the event/target entity is the one executing the command while the entity iterator is the one whose quest is being set) Procedure available if needed :)

Thanks!