OpenVPN Help on Settings

RouterOS Beginner Basics
1

Hi guys, please send tutorial to setting up OpenVPN and authentication through certificates.

I have 4 files: ca2.crt, client.crt, client.key, ta.key.
Tell me how to set up OpenVPN and authorized through these files ?

2

https://rbgeek.wordpress.com/2014/09/10/openvpn-server-setup-on-mikrotik-routeros/