Pool

A BPMN 1.1 Pool represents a Participant in a Process and does not map to any specific BPEL 1.1 element. Enterprise Architect uses Pools to represent external Participants, with which the BPEL Process communicates. These are 'black box' pools; that is, they are abstract and do not expose any details (they do not have any BPMN 1.1 elements inside them).

BPEL Properties:

Double-click on the Pool in the BPEL diagram
Right-click on the Pool | BPEL | BPEL Properties

Reference

Field/Button	Action	See also
Name	Specify the name for the Pool.
OK	Save the values entered in the dialog.
Cancel	Discard the values entered in the dialog.
Help	Display this Help topic.
General	Open the 'UML Properties' dialog.	Properties

Notes

A BPEL Process should not contain a Pool as its child element
A BPEL diagram under a BPEL Process contains an implicit Pool - so it is invalid to add a Pool in this BPEL diagram to represent the BPEL Process
Pool cannot have any incoming or outgoing Sequence Flow connectors - it can have only incoming or outgoing Message Flow connectors