Yes! You can set up the same hotkey configurations for several characters.
1. Open the Options window and set up the configuration you want and "Rename" it to the character you want it applied to.
2. Then click "Copy" and a window will pop up where you can enter a new name for the preset.
Name the present to another character AND check the "Auto-Switch Hotkey Preset" for the easiest experience switching between characters.
I hope this helps!