Changing staff images in demo doesn't change in all places


I’m a total newbie so I apologize in advance if this question is too simple/stupid, but I need help.

I am using the TOTAL / Agent Demo and am able to change the staff pictures to what I want, however, when you click on the staff picture, a second window pops up providing the same staff picture, along with their job description. I can’t seem to figure out how to change the second image (I can edit the job description no problem). I’m guessing it has something to do the VC code building in to the staff page. i.e. below -

[vc_single_image image=“270” …

where do I find this image? It’s not in my Media Library as “270”.

Thanks in advance