When running "Searches, reports, and alerts » Add new", using Splunk 6.2.3, on Windows 2008/R2, I cannot select either:
Accelerate this search
Schedule this search
The check boxes are not clickable, which means I am unable to set functions such as "Alert actions"
Shared Services Canada
I'm guessing you may be on a free license, or may be restricted in your user's capabilities within an Enterprise license'd Splunk.