Custom toolbar with Summernote

paragraph includes indent and outdent, codeview as it suggests does codeview.

$('.summernote').summernote({
    toolbar: [
        //[groupname, [button list]]

        ['style', ['bold', 'italic', 'underline', 'clear']],
        ['color', ['color']],
        ['para', ['ul', 'ol', 'paragraph']],
        ['view', ['codeview']],
    ]
});

If you look on the main Summernote website as opposed to the API docs you will see a clear example, that explains how to customise the toolbar. It is on the Deep Dive page and scroll down to Custom Toolbar. It also lists the available toolbar buttons.

http://summernote.org/#/deep-dive#custom-toolbar

in settings.js You have basic setting (with all features on):

toolbar: [
    ['style', ['style']],
    ['font', ['bold', 'italic', 'underline', 'clear']],
    ['fontname', ['fontname']],
    ['color', ['color']],
    ['para', ['ul', 'ol', 'paragraph']],
    ['height', ['height']],
    ['table', ['table']],
    ['insert', ['link', 'picture', 'hr']],
    ['view', ['fullscreen', 'codeview']],
    ['help', ['help']]
  ],

indentation is in 'paragraph'