W.Salaam,
I think the number of locations might be as per meshing for CSI Safe. I might be wrong here but when I use RISA3D, it allows me to select number of locations along where length where I want results to be reported. Normally, I choose 100 locations along beam length.
Irrespective of that, the softwares report results along the length of the beam. The question is that how does SAFE define "end", "middle" and "start" regions? Like if you have 100 reporting points along a beam length, would 100/3 in the middle be reported as "middle", and other 2/3rd as "end" and "start". You will need to look up SAFE software manual for that.
Let me know if the above makes sense to you or not. I will be happy to answer any follow up questions.
Thanks.