You can view a brief rundown of a particular instance of Leave by selecting it from the Leave page. Initially, your entire leave year is summarised on this page – click on any month to expand that view to see all Leave for a single month. Then, select any individual instance of Leave to see who has recorded or approved it.
If you need to see a timeline of all Leave actions (e.g. requests, approvals, etc.) you can go to Request History under the Tools drop-down menu on the Leave page.