Change ‘destination’ slug

Hi,

Further to my previous question regarding changing ‘destination’ text in breadcrumb (which is solved) I now face another challenge that the slug ‘destination’ is still there while browsing sub-category under ‘destination’ eg.

– mywebsite/destination/eastern-region/

which should be
– mywebsite/region/eastern-region/

mywebsite/region/ is accessible though, and list all sub-categories. But the question is – while browsing trip under those sub-categories returns ‘mywebsite/destination/eastern-region/trip-name’.

Thank you in advance.