I use my dining room table for sandwiching my quilt. I lay something on the table to protect the finish than layer on the back, batting and top centering it on the table. I begin in the middle and start basting or pinning and work out toward the sides, top and bottom smoothing as I go. Works really well for me.
If you begin in the middle and get it stabilized than moving the sandwich around to work out to the edges is fairly easy to do.