By default, when creating a new workflow all input parameters will be displayed in the Unassigned group.
A Parameter Group can be added by clicking the Add button from the Parameter Groups area:
The Parameter Group window will open. Enter a name for the group, a description and/or an image to be associated to that group then click Save changes.
A Parameter Group can be edited by selecting it and clicking the Edit button:
There can be edited the parameter group’s Name, Description or Image. The position of the parameter groups can also be changed, by selecting them and then drag and drop them.
A Parameter Group can be removed by selecting it and clicking the Remove button. All the assigned parameters will be moved to the Unassigned group.
Parameters can be moved to a Parameter Group by individual or multiple assignments.
...
Multiple parameters can be assigned to a group by selecting the group and clicking the Assign/Unassign button, which will open the Assign / Unassign window:
In the Available Parameters area select the desired parameters and click Add Selected. The Add All option will assign all the parameters from the Available Parameters list. The Close button will close the window and will move the desired parameters to the selected group.
...