On the ClearForms dashboard on the left side you have many options to search for a group of processes.
One option is to search by completion date (the system tracks the date on which the last step of a process was completed).
If you select the "Completion date" box and then enter a date range the system will find all the processes completed during that date range.
Please note that you must deselect "Active" under completion status to use the search by Completion Date option.
You can narrow the search results further by selecting a specific workflow type and/or Team and you can narrow further from there by selecting additional options.