I'm sorry to say that this product is NOT user friendly. I downloaded the app last evening and started to populate tasks within the "Name" field. I then wanted to create the hierarchy and add subtasks but every time I "Outdented" a task, the task was removed from the line and taken to the bottom of the all of the tasks. I tried working with it several different times and have just been frustrated with my results. Also, the mouse scroll does not work on the page, but I have to go to the side bar to scroll - Frustrating.
**** Note*** Scrolling works both Vertical Up/Down and Horizontal to the right
Spreadsheet: select a Cell in the spreadsheet and FN UP/Down Arrow
Right side of Application with scroll bar: cursor over and use the scroll wheel and it will go up/down
Gantt Chart: default scroll wheel will go to the right to tract the Tasks on the timeline
Resource spreadsheet: default scroll wheel goes up and down as it is not a timeline based view.