HOW TO CREATE SITE TO SITE IP SEC ON FORTIMANAGER

Hello team kindly help

i am configuring site-to-site IPSEC on fortimanager to push on fortigate but the i am confused 
where to confgure the IPsec?

i have tried to my best on all platform

1. on VPN Manager
2. on IPsec Template
3. on the device phase1 and phase 2

but after creating the vpn on all the 3 i can not see the VPN as the interface so that i can use on policy?

PLASE HELP