How to set up VPN between different offices

Dear support,

As a new hand on IT, I am looking for a detailed manual for how to set up VPN tunnel (peer to peer) between 2 offices, below is my ideal network model

My router model: Mikrotik RB750Gr3

Millions of thanks for any instruction
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Check this: https://wiki.mikrotik.com/wiki/Manual:IP/IPsec
Look for “Site to Site IpSec Tunnel”

Great! that what i need, many thanks!