Add Second at the Details form Time Period

I want add “Second” select box, at the Detail form Time Period, either start, end time.

It’s possible?

help me. thank you.

You can customize details form. The information about that can be found here: … tails_form

I know the url.
but, my question’s not solution.
I attach image file.
Mark the red line, “Sec”.
I want there add “sec” select list.

thank you.

Anybody no idea?
it impossible?

new attach file.

help me. plz

The line with time picker controls defines as part of
And it can be modified only by changes in dhtmlxscheduler.js

You can check debug version of js files ( it will be around line 3250 ) - you will need to alter render method, which defines HTML of the control