The system does not allow for multi-select using keyboard shortcuts; the only way to select multiple criteria from a drop-down menu is to select each item individually. When reporting on many criteria, it becomes time-consuming to scroll through and select parameters to configure reports. An enhancement idea may be a look-up feature that allows you to type in keywords related to specific criteria and select from a list of items that match the keywords in their titles. Another idea for enhancement would be to allow shift+select keyboard shortcuts to enable multi-select on an array of parameters from a drop-down, reducing the number of clicks required.