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Open the shared inbox through SUNY Canton email through the web

Click on the Open another mailbox button
Type in the address of the shared mailbox account
Once you type in the full email address of the press Open

Click the settings gear in the top right corner of the window

In the window that opens up, click "Account", then "Automatic Replies"

Enable Automatic Replies by clicking on the toggle at the top

Select the check box next to Send replies only during a time period

Adjust the date and time settings as necessary
Adjust any additional options as you see fit
Please note that these options are mostly targeted at personal emails instead of a shared email
Setup your automatic reply message in the box
Enable the option Send replies outside your organization

When satisfied with changes, press Save