[quote=@Half Pint]
<Snipped quote by Cyrania>

An alternative option would be collaborating on a post, but at this stage in the event it might be best to let everyone make their entrance before working on that. 
[/quote]

You can also just source dialogue from the necessary player to continue a post. Often I write a post, put placeholder dialogue and reactions and then send the post to the respective player to tweak and finalize.