hI @PhilipDAth @DarrenOC Thank you for your swift response.
I didn't get the solution i am explaing if you can get my question.
I have 2 MX64 and MX68 and there is a tunnel BW them because one is in Head Office (UAE) and other in branch Office (KSA) So when the office staff connect to Wifi in KSA they dont need to connect Client VPN because of Tunnel.
Now i have attached another Wifi modem to MX 2nd port WAN 2.i want to same setup when the office staff connect through new Wifi internet. for both ISP connection one tunnel Site to site VPN will work or i need some changes?