Help with custom show_on

Hi there,
I’m really loving CMB2 and it will most likely become a huge part of my WordPress workflow. However, I’m having trouble understanding how the custom show_on filters work.

I have CMB2 inside a plugin like this:
plugin_folder/
– cmb2/
– functionality.php

So, let’s say I have some metaboxes in my functionality.php file, formatted like so:

$meta_boxes['slide_fields'] = array(
		'id'			=> 'slide_fields',
		'title'			=> __( 'In Slider?'),
		'object_types'	=> array('slides'),
		'context'		=> 'side',
		'priority'		=> 'high',
		'show_names'	=> false,
		'fields'		=> array(
			array(
				'name' => __( 'Featured Slide', 'cmb2' ),
				'desc' => __( 'Show in slider? Only most recent 2 features will be displayed.', 'cmb2' ),
				'id'   => $prefix . 'slider_checkbox',
				'type' => 'checkbox',
				)
			),
	);

…and then I want them to only show on a page with slug of ‘home’. So, I grab this filter. But how do use this filter?

Would I write something like this?
be_metabox_show_on_slug( true, $meta_boxes[slide_fields']);

Should this be inside of my $meta_boxes array somehow?

I’ve spent almost an hour trying to figure this out and apparently my brain just isn’t making the connection. Any help would be much appreciated.

https://ww.wp.xz.cn/plugins/cmb2/