You can schedule a workout for a given date only, and if you need a reminder for the workout at a specific time, you can set up a notification in a Google or Office 365 Calendar (whichever you have linked to Garmin Connect). The watch will then notifiy you at the scheduled time.
I realize this post is over 2 years old but it is really frustrating. This is the one thing I miss most since transferring from a competitive product. The inability to schedule a workout to a timeslot just seems to be lame. I really wish Garmin would change this - having an "all day" workout just makes it too easy for it to get lost on my busy calendar.
