Filter the post meta shown in the metabox:

'jsmspm_metabox_table_metadata' ( $metadata, $post_obj )

An array of regular expressions to exclude meta keys:

'jsmspm_metabox_table_skip_keys' ( $skip_keys, $post_obj )

current_user_can() capability required to show post meta:

'jsmspm_show_metabox_capability' ( 'manage_options', $post_obj )

Show post meta for this post type (defaults to true):

'jsmspm_show_metabox_post_type' ( true, $post_type )

current_user_can() capability required to delete post meta:

'jsmspm_delete_meta_capability' ( 'manage_options', $post_obj )