1. Click the Side Drawer 
2. Tap Add a Place 
3. Fill all the required fields
4. Tap Mark location on the map* and place map marker 
on the desired location.
5. Tap DONE & finalize the location
5. Tap SUBMIT.
Or
1. Long press on any location on the map.
2. Tap on Add a Missing Place.
3. Fill all the required fields and tap SUBMIT.