WorkflowGen offers for each process the possibility to have one or several managers. 
Different levels of security can be defined like read only or modification of the process definition.

Yes.
The processes can be duplicated and modified at any time without compromising the ongoing activities. A process that is modified will be saved under the same name but with a different version number. The new requests will be launched by using the latest version as the ongoing requests will be completed with the previous version.

Yes.
WorkflowGen works in a WebFarm architecture that enable a great scalability and ease recovery procedures in case of incidents.

No ActiveX is required to use WorkflowGen.
The PDF forms only require the free Adobe Acrobat Reader installed on the end users PCs and the WebForms are standard HTML that will be read by the web browser.