Fortigate 60e configuration for ipsec vpn tunnel between 4 locations

[Anandj2020]

Newbie here with Fortinet/Fortigate. We recently upgraded our firmware to 7.49. Are there any instructions/advice on how to change our static IP (ISP paid service) to a free / low cost DNS service? I'm very new with DNS also. An IT tech set up 4 offices for a family member with Fortigates somewhat unnecessarily, in that they never used a separate firewall device for 10 years - has since been unreachable, and I am trying to learn on the go to assist the family member in lowering running costs where possible i/e cancelling her static ip's if possible.  

Additionally, the tech had set up 2-3 workstation cloud backups at each of the 4 locations. Could someone please advise what settings in a Fortigate 60e/f I'd need to make so each of the 4 offices could see a shared network folder?  

Many thanks, 

AJ

[funkylicious]

hi,

maybe https://community.fortinet.com/t5/FortiGate/Technical-Tip-How-to-configure-Dynamic-DNS-FortiGate/ta-... will help.