You can (theoretically) also use Bryntum Sidebar, as any other Bryntum widget, in another place, however, it was designed to work with the calendar so you may need some extra coding/configuring to make it working elsewhere.
What exactly are you trying to achieve? A screenshot or a sketch would help us to advise you the best approach.
You could, but you'd be losing a lot of built in functionality.
The side bar is completely themeable.
Every widget in it is completely themeable, and you can very easily add to it to add extra element such as a ComboBox which is more capable and themeable than a raw HTML select.
The DatePicker is a Panel, so you can see how it's configured to be collapsible in the sidebar's config.
And I think you also need a
createButton : {
type : 'button',
menu : [{
text : 'Create type 1',
onClick : 'up.createTypeOne'
}, {
text : 'Create type 2',
onClick : 'up.createTypeTwo'
}, {
text : 'Create type 3',
onClick : 'up.createTypeThree'
}]
}
In the items of your sidebar. Add a weight to insert it where you need it.
It works but in menu items its "onItem" not "onClick"
createButton : {
type : 'button',
menu : [{
text : 'Create type 1',
onClick : 'up.createTypeOne'
}, {
text : 'Create type 2',
onClick : 'up.createTypeTwo'
}, {
text : 'Create type 3',
onClick : 'up.createTypeThree'
}]
}