momentjs date and time string add minutes

1moment(date, "DD-MM-YYYY hh:mm:ss")
2                        .add(10, 'minutes')
3                        .format('DD/MM/YYYY hh:mm:ss');

1var travelTime = moment().add(642, 'seconds').format('hh:mm A');// it will add 642 seconds in the current time and will give time in 03:35 PM format
2
3var travelTime = moment().add(11, 'minutes').format('hh:mm A');// it will add 11 mins in the current time and will give time in 03:35 PM format; can use m or minutes 
4
5var travelTime = moment().add(2, 'hours').format('hh:mm A');// it will add 2 hours in the current time and will give time in 03:35 PM format