port fowarding basics

Hello all
I have just taken over as the resident techie at my work. I am not usually the one that handles this, but here we are. We do not have a tech. The previous person was much better equipped to deal with this stuff. We are getting a new Atrium security system. To use the software attached to the system, port 80 and port 10000 have to be accessible. I am not a tech noob by any means. However, I am finding that figuring out how to set up port forwarding with Mikrotik is not as easy as I thought.

Official docs
https://help.mikrotik.com/docs/display/RKB/DST-NAT+port+forwarding
https://help.mikrotik.com/docs/display/ROS/NAT

A user article
https://forum.mikrotik.com/viewtopic.php?t=179343