TSML UI is a meeting finder that can be embedded in any web page. However if you are using the 12 Step Meeting List plugin, the best way to enable it is to go to Meetings > Settings > User Interface and enable it there.

Alternately, a tsml_ui shortcode is available. This can be embedded in a page using the WP Block Editor by adding a Group > Columns > Column > Shortcode. Set the Group to be Full Width and the Columns to be either Wide or Full.