Add button with different URL to detail section

You mean for each listing?
Yes, you can, by adding a custom URL field, see https://wpgeodirectory.com/docs/core-place-settings/#url

Thanks

You will need a custom URL field for each listing to make a different link for each listing.
You can add it in the sidebar etc with the normal settings, but to add it where you indicated, you will need some custom coding.
Thanks

Support is for our plugins as they are.
If you don’t know how to do your own custom coding, you can find help at https://geodirectoryexperts.com/

From https://wpgeodirectory.com/support-policy/

Customizations

We provide GeoDirectory and its addons as are. We don’t provide customization services for them nor we support any 3rd Party customizations of our products. For customization we intend any html/css/php/js work that changes the way GeoDirectory and its addons look or function, in relation to the way we made GeoDirectory and its addons available to you.
If you need customization services we suggest to let developer members know in our forum General Discussions, or get in touch with a GeoDirectory Developer for hire.

Thanks