How can I make a video lecture with an external link?

[Miki-O]

Hello everyone,

I am new here, great to see you.
I was watching one of the popular Udemy courses last night and found that the instructor's video lecture has an external link on the screen. So if I click that, it goes to the specific webpage.
I am wondering how I can create that.
I found there are some tutorials on Youtube how to do it for Youtube videos (Youtube has the function to do that), but I am unable to find any instruction to create that for a general video (which I want to upload on Udemy).
I wonder if I can do it by myself using video editing software. I am going to learn FCPX or Camtasia (I am a Mac user). 
Or should I use asking someone who does programming or coding?
Please kindly advise.
Thanks for your time,

Miki

[Vlad_B]

Hi Miki,

Did you try to ask the author of the course?  Direct message, Q&A. 

Also - does the lecture have any Resources links? Maybe, if there is only one link there, it becomes clickable - but that's only a guess.

With kind regards,

Vlad.

[Miki-O.]

Hi Vlad,

Thanks for your reply.

I haven't asked the instructor as she has never answered any questions from her students and also reviews which she received.
Thanks anyway!

Miki