Position buttons in the center of the header using Python

Question

I'm trying to find the proper way of positioning labels/buttons in the center of the Sequencer's Tool Settings bar.

I have a code that can easily add buttons/labels to the bar, but I can't figure out how to position them in the center, kind of like the dropdown with the shuffle option in the header(marked with the blue line in the attached picture). What would be the proper way of setting it up in the code?

Thank you so much!

import bpy
    
def draw_buttons(self, context):
    
    original_SEQUENCER_HT_tool_header_draw_tool_settings(self, context)

    row = self.layout.row()

    row.label(text = "BUTTON 1")

    row.label(text = "BUTTON 2")
        
          
original_SEQUENCER_HT_tool_header_draw_tool_settings = bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings

def register():
    bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings = draw_buttons

def unregister():
    bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings = original_SEQUENCER_HT_tool_header_draw_tool_settings

if __name__ == "__main__":
    register()

Answer 1

The easiest way I found, is to add 3 columns to the row (left and right column are empty) and set a horizontal spacer between the columns.

import bpy
    
def draw_buttons(self, context):
    
    original_SEQUENCER_HT_tool_header_draw_tool_settings(self, context)

    # Add 3 columns in the row, with horizontal empty space between them
    layout = self.layout

    # Empty column on the left
    row = layout.row()
    layout.separator_spacer()

    # Column in the center
    row = layout.row()
    row.label(text = "BUTTON 1")
    row.label(text = "BUTTON 2")
    layout.separator_spacer()

    # Empty column on the right
    row = layout.row()
        
          
original_SEQUENCER_HT_tool_header_draw_tool_settings = bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings

def register():
    bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings = draw_buttons

def unregister():
    bpy.types.SEQUENCER_HT_tool_header.draw_tool_settings = original_SEQUENCER_HT_tool_header_draw_tool_settings

if __name__ == "__main__":
    register()