Да, вы можете добавить более одной подписи на вкладке LocationEntryPoint Пример кода
<?xml version="1.0"?>
<PCF
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="../../../../../../pcf.xsd">
<Forward
canVisit="true"
id="YourPageForward">
<LocationEntryPoint
signature="YourPageForward(queryParamId1:String)"/>
<LocationEntryPoint
signature="YourPageForward(queryParamId1:String, queryParamId2:String)"/>
<Variable
name="queryParamId1"
type="String"/>
<Variable
name="queryParamId2"
type="String"/>
<ForwardCondition
action="my.web.YourPageForwardHandler.Instance.doProcessOne(queryParamId1)"/>
<ForwardCondition
action="my.web.YourPageForwardHandler.Instance.doProcessTow(queryParamId1, queryParamId2)"/>
</Forward>
</PCF>