Thanks for reaching out, by default if you’re using Store info icons, it will show the clock icon for operating hours as screenshot below
If you’ve perform customization on the code, best to request customization from our devs team via the contact form here https://codecanyon.net/user/highwarden
Based on Codecanyon support policy here, the off-the-shelf product features come as it is as per item description and live preview page, customization is not part of the support scope, however can be requested to our devs team via this email if needed.