linking a button widget to a separate page

Hi there,

so I am using the vantage theme and just created a subpage that I want linked to my ”packages” page. That being said, in that particular page I also included the button widget which I want to link to another page with more information that I also created. When I try to link my button to that 2nd page, I can’t find that 2nd page in my content and am not sure what URL to use to link it to…
Can you please help?

Thanks,
A.