I was able to get what I wanted accomplished here. I have a month-view timeline with resource grouping. There's a panel docked at the top and bottom, with the scheduler docked to fill the center.
The bottom panel is set to height 20. In it, I have a RadLabel docked to the left side. A RadGridView of height 40 is docked to the top in the center. I had to set the grid height to at least 40 or else it would show scroll bars. The DataSource of the RadGridView is a 1-row DataTable with 12 columns.
To handle the column sizing and scrolling (if SchedulerTimescale.DisplayedCellsCount < 12), I added this to the Form_Load():