i) Once your desired board is appeared, you can now track the completion of the task by viewing the weightage percentage (1) progress bar. Total no: of items (2) displays the count of total process activities for the task. No: of overdue items (3) helps by indicating the number of process activities which have been overdue so that you can prioritize those processes activities.

ii) To find any specific process activity, you can search it in the search bar (highlighted in below image). with the help of (WBS / title of process). You can also update the status of activity by clicking on the drop down (as appeared in below image)