The screenshot below shows the InitiatePayment process in Integration Designer.
Note that the payment steps are not implemented.
For the Human Tasks User Interface settings have been defined.
To get the corresponding options in the drop down a Eclipse plugin for Integration Designer was defined to embed custom client types into the human task editor. In this plugin the "Initiate Payment Form" maps to the client type Dojo.InitiatePaymentForm, "Enter Payment Information Form" maps to Dojo.EnterPaymentInformationForm.
For the Initiate Payment activity associated human task the User Interface settings are:
The human task associated with the Enter Payment Information activity has the following client settings: