Yes, you can have your suitable time range. You can do this by selecting the time range in the General Settings -> Time settings tab in the Order Delivery date on the admin side. Firstly, you need to enable “Enable Delivery Time capture”, then select the Delivery From Time and Delivery To Time from their respective drop boxes. In this manner, the time range will be created and time sliders will be displayed on the calendar with the set time range on the checkout page.