How to create a custom Deploy/Content and temp Directory in domain/standalone Mode of EAP?

Issue

• How to create a custom deployment directory for the EAP servers which are running as part of an EAPdomain mode.
• How to Define An External Deploy Directory in EAP?
• How does one define a second deployments directory in EAP?
• Is it possible to use system properties to configure a deployment location?
• How to use properties to define the location for deployments?
• What is the path of the deploy folder where EAR gets deployed/extracted.
• Without complete EAR deployment, can a hot fix in the JSPs be reflected in domain mode.
• How to create a custom temp Directory in EAP.
• After configuring a new deployment scanner it gives an error during JBoss startup:

09:26:02,914 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 6) JBAS014612: Operation ("add") failed - address: ([
    ("subsystem" => "deployment-scanner"),
    ("scanner" => "my-scanner")
]): java.lang.IllegalArgumentException: JBAS014847: Could not find a path called 'sample'
    at org.jboss.as.controller.services.path.PathManagerService.resolveRelativePathEntry(PathManagerService.java:91) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at org.jboss.as.server.deployment.scanner.DeploymentScannerAdd.execute(DeploymentScannerAdd.java:112)
    at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:607) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:485) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at org.jboss.as.controller.AbstractOperationContext.completeStepInternal(AbstractOperationContext.java:282) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:277) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:343) [jboss-as-controller-7.3.0.Final-redhat-14.jar:7.3.0.Final-redhat-14]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
    at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.1.Final-redhat-1.jar:2.1.1.Final-redhat-1]

09:26:02,932 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) "JBAS014784: Failed executing subsystem deployment-scanner boot operations"

• How to pass the deployment directory in startup scripts?