Add shutdown option to scheduled tasks

[rjo98]

Just thought of another suggestion. I think the only way to schedule a defrag overnight then have the computer shutdown afterward is to enable that shutdown after defrag option for the entire program, then schedule a defrag. I could see myself then going to do a manual defrag while i'm working on things during the day and forget i have that option on then my computer shuts down on me when i don't expect it. maybe inside the schedule an option could be added to include the shutdown after defrag for just that scheduled job, not the entire program.