While scheduling through Schedule Now, you'll have the option to change the order to "Fixed" and then drop in the time frame below that. So in this example, if Jasper is only available between 2-5pm, you can choose "Fixed" from the dropdown and then adjust the hours from 2pm to 5pm.
How To: Set a specific start time on an interview template
In the event you want to edit, click on the “Order” drop down menu
Click on “Fixed Time Range”
Adjust the settings to the time you prefer
Click “Save” in top right corner