1) Access the Project you wish to work on. This will display the Project Summary.
2) Click "Add Issues".
3) You will now be shown the Issues list. Tap the blue button that reads "Add" to the top right to add your first issue!
4) Your browser will show your new Issue on the right half of the window. Here, you can add a Title, Assignee, due by date, photos and comments for this Issue. You can also mark this issue as completed if necessary.
At step 4, the Issues List will be moved and displayed on the left side of the window, meaning you can add further issues from there without needing to go back in your browser.