Active/Standby Dual ISP:
You can achieve that by creating an SLA Monitor Object and linking it with a static route.
Open the device from Device Management under "Devices"
Navigate to Routing > Add Static Route Configuration >
Fill in your route details.
The last option "Route Tracking" will help you add a "SLA Monitor Object".
Complete the SLA Monitor Object configuration and attach it with the route and you are good to go.
You can also create and modify your SLA Monitors under "Objects"
Active/Active Dual ISP:
This requires creating a policy based route which is not directly supported by FMC and hence need to be acheived through FlexConfig.
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