How to sort the list of widgets?

I would like to manage the order of the widgets, in the same way that you can manage the administration bar with the module "apostrophe-admin-bar".

I have seen that in the demo of the museum there is this option:

But looking at the code, I haven't figured out where it's done.

How can I add this option?

Solution

The order of the widgets in the menu is the order in which you pass them to apos.area. If you're referring to putting them in columns, that is a project-level CSS override, you can find that here

CSS https://github.com/apostrophecms/apostrophe-open-museum/blob/master/lib/modules/apostrophe-assets/public/css/utils/_admin.less#L1-L15

Area wrapper https://github.com/apostrophecms/apostrophe-open-museum/blob/master/lib/modules/apostrophe-pages/views/pages/default.html#L27