This isn't supported by our chat interface.
However, a GM and a Player can replicate direct messages by using the Tab Types and Options option.
You can do this by having a Hidden Tab on a Character Sheet. A Hidden Tab can only be viewed and edited by the Campaign Owner/GM, and the Character Sheet owner.
By using this feature, both GM and player can type into the note simultaneously without other players knowing,
More fun at the table, less fuss around it
The tavern falls quiet. You spent all week on this villain: the scarred voice, the secret letter, the slow reveal in the final act. Your players have other plans. They have just set fire to the only bridge out of town, the paladin is deep in an argument with a goat, and the rogue has quietly pocketed the letter that was supposed to unravel everything. Somewhere across the river, your villain stands alone in the rain, waiting for an entrance that will never come. The bard leans back, grinning. Four faces turn to you.
What do
you do?