International Date Format and 24-Hour Clock on Calendar

We would like to add in this snippet so that the Kanboard calendar looks like out other ones. Where can we add it, or is there another way to achieve the goal?

// – Start Cal Customisation
height: ‘100%’,
contentHeight:‘100%’,
slotLabelFormat:“HH:mm”,
weekNumberCalculation:‘ISO’,
minTime:‘07:00’,
maxTime:‘22:00’,
scrollTime:‘08:00’,
views: {
basic: {
titleFormat: ‘MMMM YYYY’, columnFormat: ‘dddd’},
agenda: {
titleFormat: ‘MMMM YYYY’,
columnFormat: ‘ddd D.M’,
titleRangeSeparator: ’ - '},
agendaWeek: {
titleFormat: ‘MMMM YYYY’,
columnFormat: ‘ddd D.M’,
titleRangeSeparator: ’ - ‘},
agendaDay: {
titleFormat: ‘dddd, DD MMMM YYYY’,
columnFormat:’ '},
},
// – End Cal Customisation