1 . Don't make any fields mandatory in one status on click of button make fields which have to be mandatory by adding a execution step which has new status , now all fields will be prompted , where users will have Save Progress button but they might end up confused if they don't proceed to next step without clicking on Continue Workflow Action. I think this is already suggested in above comments
2. By modifying the JSP( which is not suggested) was able to achieve this and working perfectly fine since 3 to 4 years only drawback is attachments in the request references will not be saved, for that users have to click on a button to save the attachments in the request reference.
1 . Don't make any fields mandatory in one status on click of button make fields which have to be mandatory by adding a execution step which has new status , now all fields will be prompted , where users will have Save Progress button but they might end up confused if they don't proceed to next step without clicking on Continue Workflow Action. I think this is already suggested in above comments
2. By modifying the JSP( which is not suggested) was able to achieve this and working perfectly fine since 3 to 4 years only drawback is attachments in the request references will not be saved, for that users have to click on a button to save the attachments in the request reference.