Represents parameters used to formulate a request for a group of instruments.

This request can be used to resolve the Options Chain.
Use CQGCEL.CreateInstrumentsGroupRequest Method to create an object of this type.
Use CQGCEL.RequestInstrumentsGroup Method to perform this request.
This request is asynchronous. The execution result is reported via CQGCEL.InstrumentsGroupResolved event.
The request result is represented by the CQGInstrumentsGroup object. It is possible to access all resolved instrument groups via CQGCEL.AllInstrumentsGroups Property.