When I set the ruler to a shorter time period I get a strange block at the bottom of the scheduler.

This would not be an issue, if just for the fact that you can right click in this section and add an appointment?

This should be hidden or removed or not have the context menu show 

Any help would be appreaciated

Hi Denis,

Thank you for contacting us.

The blank area under the scheduler appears due to an issue in its layout logic. I have logged it in our Public Issue Tracking System and we will address it in a future release. Here is the link to the PITS item: http://www.telerik.com/support/pits.aspx#/public/winforms/13377.

For the time being you can prevent the context menu from showing over the blank area by handling the ContextMenuShowing event as shown below:

Your Telerik points have been updated. Feel free to ask if you have any additional questions.

All the best,
Ivan Todorov
the Telerik team