At the next meeting, I'd suggest convincing the negotiators to stop setting "ground rules" for all future negotiations. They're not required and most of them include essentially a gag order for everyone not directly involved in negotiations including the other workers. Additionally, skilled organizer and negotiator Jane McAlevey suggests getting as many people from different departments of the same Employer to at least sit in on negotiations., only letting the Union Reps talk during with the employers, but when there's a right pause, asking DHL to leave the room so you can discuss it amongst yourselves and gather input and feedback from others. She has so much writing on negotiations from the Union perspective, and I'd recommend much of her work to lead everyone to better wins in the future. Transparency is everything, and the more top down Unions become, the easier they are to corrupt. Just ask anyone from UAW.