How to get swagger api-docs for single endpoint ?

Here is my working url : 

https://127.0.0.1:8888/v1/v2/api-docs?group=First API

I can able to get api-docs as group wise, how can I get api-docs for single endpoint individually?

Let's I have 20 endpoint in my project, I have grouped them all end points in First API, Second API, Third API, Fourth API

and when I select First API in select spec, I can see about URL in swagger page , when I click on it I can see api-docs info for five endpoints which belongs that group, but If I want to see api-docs for single point only, how can I see that, please let me know if there any way forward