Topic pretty much says it all. It would be useful to see all needs scheduled on a given day.
Sorry for the delay in this response. Shift needs are coded a little differently from Happens On, Runs Until, and Ongoing needs, so it would definitely need to be an enhancement to add this capability for Happens On needs. I can add this to our list of items to discuss for potential enhancements.
In the meantime, as a workaround, you can create a custom-shift need for a single day. This will cause the need to appear on the scheduling calendar, and you can schedule volunteers as needed. The only downside here is that, when the need is posted, it will say that "multiple" shifts are available when there is only one.
I will pass along your suggestion to our Development team. Thanks for your feedback!