Change of time window in reports

Change of time window in reports

Good afternoon,
Pleasure to greet you.

In version 12.3.004 the possibility of creating reports is limited to 2 options: "24 hours" or "8:00 AM to 8:00 PM".
I need help to be able to change that time window to my work schedules: 06:00 AM to 06:00 PM, please.
Attachment screen (Spanish version of the application)
Thank you.

Regards,
Victor.

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