Hello Mary,

I am afraid that the Scheduler widget would not allow you to define a template for the resize visualization. Having that said, in order to display a 24 hours clock, I would suggest you use a Kendo culture which has that format as its default. For example, the en-GB culture is such:

<script src="https://kendo.cdn.telerik.com/2019.3.917/js/cultures/kendo.culture.en-GB.min.js"></script>

and:

kendo.culture("en-GB");

As per the custom text, that could not be added to the resize element.

Here you will find a Dojo sample implementing the above. Keep in mind that the change of the culture may also affect other parts of the Kendo widgets.

Regards,
Veselin Tsvetanov
Progress Telerik