How to attach same ADF form to different Human task in BPM

Under your UI project (The first adf form UI that you have created) there will be hwtaskflow.xml.

open hwtaskflow.xml file and copy the following    (this is code for your first Humantask1;in you case it will be something Sales Quote EntryHuman task)

<hwTaskFlow>
<WorkflowName>HumanTask1</WorkflowName>
<TaskDefinitionNamespace>http://xmlns.oracle.com/sample/HumanTask1</TaskDefinitionNamespace>
<TaskFlowId>HumanTask1_TaskFlow</TaskFlowId>
<TaskFlowFileName>WEB-INF/taskFlows/HumanTask1_TaskFlow.xml</TaskFlowFileName>
</hwTaskFlow>

and paste the same in hwtaskflow.xml.

 Now replace <WorkflowName> and <TaskDefinitionNamespace> values with your Humantask2 name and namesspace. then your hwtaskflow.xml should be something like this.

<hwTaskFlow>
<WorkflowName>HumanTask1</WorkflowName>
<TaskDefinitionNamespace>http://xmlns.oracle.com/sample/HumanTask1</TaskDefinitionNamespace>
<TaskFlowId>HumanTask1_TaskFlow</TaskFlowId>
<TaskFlowFileName>WEB-INF/taskFlows/HumanTask1_TaskFlow.xml</TaskFlowFileName>
</hwTaskFlow>
<hwTaskFlow>
<WorkflowName>HumanTask2</WorkflowName>
<TaskDefinitionNamespace>http://xmlns.oracle.com/sample/HumanTask2</TaskDefinitionNamespace>
<TaskFlowId>HumanTask1_TaskFlow</TaskFlowId>
<TaskFlowFileName>WEB-INF/taskFlows/HumanTask1_TaskFlow.xml</TaskFlowFileName>
</hwTaskFlow>