Use the oik Shortcodes button () to insert ANY active shortcode into your content.
Use oik options > Buttons to enable the button.
When using the Visual editor this button should appear in the toolbar.
Click on the button to display the oik shortcodes dialog.
When using the Text editor use the oik [] shortcodes quicktag.
With WordPress 5.0 the button is available in the Classic block.
See also
For more information about WordPress blocks see blocks.wp-a2z.org.