How to capture time on page?

Hi All,

I am trying to implement Adobe Analytics on a new website. The approach I am going for is by using a Data Layer and then DTM to set-up the tracking. However, I am not sure if I should include anything regarding the time spent on site/ page in this data layer? Are these metrics reported by default in the AA report suite? Or is there some additional development that needs to be done first?

Thank you!