Project MANagement by Kirra Pierce

Project manager Belle swears she's not the one with control issues. Oh no, it's her difficult engineering co-workers: Larry, Stanley, and John who have a problem being team players. So they make a little bet. If she can give up control to them for one night, 'blindly' trust them, they will follow her schedule at work—joy! If the price of a smoothly run project was putting herself into their hands, following whatever project tasks they came up with, Belle was willing to take one, or more, for the team. Little does she know they will take being a team player to new level.
Larry, Stanley, and John have a secret, well, more than one secret. The three of them are lovers, and if Belle can accept ALL that they have to offer, they plan to keep her for more than just one night. They've laid out their specifications and the testing is very through. Before the night is over, the step of faith they were taking with Belle becomes a full-fledged leap. Her body is in their hands, but their hearts are in hers.
It's Christmas after all, and these three not so secret Santas plan to make all their Christmas wishes come true. They know they can have Bell as their own for the night, but will the truth of what they want keep her from committing to their long-term project goals?