When selecting a shaper to be for all policies - For All Policies Using This Shaper - the FortiGate unit applies the shaping rules to all policies using the same shaper. For example, the shaper is set to be per policy with a maximum bandwidth of 1000 Kb/s. There are four security policies monitoring traffic through the FortiGate unit. All four have the shaper enabled. Each security policy must share the defined 1000 Kb/s, and is set on a first come, first served basis. For example, if policy 1 uses 800 Kb/s, the remaining three must share 200 Kb/s. As policy 1 uses less bandwidth, it is opened up to the other policies to use as required. Once used, any other policies will encounter latency until free bandwidth opens from a policy currently in use.