Hi there, take a look at:
https://www.thecoderscorner.com/products/arduino-libraries/tc-menu/menu-item-types/editabletext-menu-item/ especially the section on "Working with complex editable items in code" which covers time storage.
Also you can see:
https://www.thecoderscorner.com/ref-docs/tcmenu/html/class_time_formatted_menu_item.html
Generally, when you bring up the properties for a menu item in the UI, there's a link at the top to the online documentation for that menu item. Let us know if we can make the documentation easier to navigate around this, we've had a few goes at tidying it up now but user feedback is always the best way to improve it.
But essentially, you access them from the time structure that is returned, for example:
TimeStorage t = menuTime.getTime();
int hours = t.hours;
int mins = t.minutes;