Then would you use arp, proxy-arp and local-proxy-arp. Please don refer me to Mikrotik pages, give me a real-world scenario, thank you in advance.

Real -world scenario:
If you can't distingush the functions, and you do not have any desire to understand, leave the default values.
Because if you change them, without any form of knowledge of what you doing, you only risk making a mess.

Real -world scenario:
If you can't distingush the functions, and you do not have any desire to understand, leave the default values.
Because if you change them, without any form of knowledge of what you doing, you only risk making a mess.

This is very rude answer, I have went via Mikrotik wiki pages and gone through the theory. And I have overall understanding were I use these settings, but I wanted answers from more experiences people. Those used to change these setting to get one or other scenario working, this is another way of learning, experimenting, messing as you said to master the things!!!!!

Ok, (pleae not quote unnecessary)
you have perfectly reason, and I'm rude, sorry, please forgive me, I do not want offend you, but try to understand than you just now have write the rest of the truth....

Hello.

First point, I use bridges to represent the networks (management , hotspot, etc.) on the devices.
ARP enable is my default setting.
If I set up a VPN (e.g. SSTP) I change the setting of the bridge of the target network to proxy-arp.
Why? Because the VPN-client get a IP-address of the same Network and local traffic is layer2.