Ouverture tableau en bas de page

Voici le code de ce que j'ai généré avec ExtDisigner
Code:
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MyPanelUi = Ext.extend(Ext.Panel, {
    title: 'Mon titre',
    width: 1003,
    height: 661,
    layout: 'border',
    initComponent: function() {
        this.items = [
            {
                xtype: 'panel',
                region: 'north',
                height: 50,
                border: false
            },
            {
                xtype: 'panel',
                region: 'center',
                layout: 'accordion',
                activeItem: 0,
                border: false,
                items: [
                    {
                        xtype: 'panel',
                        title: 'Accordéon 1',
                        collapsed: true
                    },
                    {
                        xtype: 'panel',
                        title: 'Accordéon 2',
                        collapsed: true
                    }
                ]
            },
            {
                xtype: 'panel',
                region: 'south',
                width: 100,
                border: false,
                layout: 'fit',
                height: 40,
                items: [
                    {
                        xtype: 'panel',
                        region: 'center',
                        border: false,
                        layout: 'accordion',
                        items: [
                            {
                                xtype: 'panel',
                                title: 'Ma liste',
                                layout: 'fit',
                                collapsed: true
                            }
                        ]
                    }
                ]
            }
        ];
        MyPanelUi.superclass.initComponent.call(this);
    }
});