You need to use custom hook in your template.
That hook is: {hook h='googlemanymarkers'}
You can just paste that somewhere in .tpl files in your template for example /themes/default-bootstrap/contact-form.tpl
You need to use custom hook in your template.
That hook is: {hook h='googlemanymarkers'}
You can just paste that somewhere in .tpl files in your template for example /themes/default-bootstrap/contact-form.tpl