Routing on specific WAN interface when SDWAN configured

They would like to know if FortiGate supports IPSec & SSL VPN across multiple interfaces at the same time.

For example, if interface3, interface4 and interface5 all have a static public ip as follows:

Interface3

                Public ip 1.1.1.1

                ISP 1

                Bandwidth 10Mbps

Interface4

                Public ip 2.2.2.2

                ISP 2

                Bandwidth 50Mbps

Interface5

                Public ip 3.3.3.3

                ISP 3

                Bandwidth 100Mbps

Can the client give public ip of interface3 1.1.1.1 to a selected pool of 5 users to connect, and at the same time give public ip of interface 4 -2.2.2.2 to another selection of 10 users, and finally give public ip of interface5 - 3.3.3.3 to another selection of 30 users?

In short, they want to manually load balance VPN service across multiple WAN interfaces at the same time.

Sunny