Unable to add button to Custom List Item Ribbon - sharepoint-2010

I am trying to add a Print Item button to the Forms (New, Edit, Display) of items in a Custom List. In order to achieve this I am using the following microsoft article https://learn.microsoft.com/en-us/previous-versions/office/developer/sharepoint-2010/hh500259(v%3Doffice.14).
I follow the steps, however the Button is not displayed. Attaching Screenshots of how it is set on Sharepoint designer as reference
Do you have any ideas of what can be happening? Is there another way to add a print button the the Items Ribbon?

The button would not be added to the Items ribbon. In fact, the button is added to the drop down menu of the list item, as the below picture shows:

Related

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I'm afraid that out-of-the-box buttons will often take precedence over custom buttons, and the only way to change that would be to hide the out-of-the-box buttons.
I'm assuming you are adding the button via the Application Ribbon, correct? (not every single form and grid)
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Answering this myself in case anyone needs it.
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I'll be very grateful for all of your advise
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