Dropdown of contents OR anchor

Hi,
I'm using a select_advanced to choose a content in a list (to create a link in my template).

[
      'name' => 'Link',
      'id' => "cta_link",
      'type' => 'post',
      'post_type' => ['page'],
      'field_type' => 'select_advanced',
      'query_args' => [
        'post_status' => 'publish',
        'posts_per_page' => -1,
      ],
 ]

Is it possible to be able to either select a content in the list, or enter an anchor as "#anchor", to create a "local link".

The purpose is to use this link on a button, and this button can either go to another page, or go to an anchor in the current page.

Thanks for your help.
Etienne