It is very easy in using time editing software with no technical skills required! I am able to edit my schedule easily without any hassle at all as well it's free of cost too!! There are many other features like creating multiple calendars etc which can also help you manage different aspects related working hours/schedules perfectly but i think that this one feature alone makes me love them so much more than anything else they have got.
Nothing really dislike or dislikes about their product just if someone wants some new cool stuff then yes there might not even know what exactly should he look out from those options because everything looks great when compared side by side together. !