Next Dialogue Branch Showing on Forcegreet

[SirBeastling]

I have been trying to create a quest in which one of the NPCs force greets the player at some point. I have successfully created the package and the NPC says all of his lines. However, the next branch of dialogue topics is available to be view by the player while the NPC is saying the original starter topic.

 

I was wondering what box or options I need to tick and where to force the dialogue box to hide until the NPC is finished with his greeting.