This article explains how to schedule an OTA update in EloView 4

In EloView 4, you may force devices to update immediately or schedule them to update during a more appropriate time. 

1. In the “Devices” section, select the appropriate device.
2. Click the Software tab.
3. Click the Settings cog next to OS Update. 
4. Select the EloView version to install from the dropdown.
5. Select Schedule Update and then provide when the update should be applied (Hour, Minute, AM/PM, Day of the Week).

      6. Click Confirm to accept the changes.