On the IPR homepage, click on the Edit button (highlighted below)
You will then get this pop-up.
If you click ok, select the building you want to add from the explorer window and drag this onto the Map.
You will then get this pop-up to confirm the pin location.
The Pin has now been added, so click on Done (Highlighted below)
To change the location of the pin, click on Edit again, drag the Pin to where you want, and click Done.
To add an image to the pin-
So at the building location, you can publish a building image by dragging an image off, say your desktop, onto publish files or by clicking publish files and publishing an image.
Once the image has been published, click the edit button and tick the checkbox next to Location Picture.
Click submit.
This then adds the building image you have just published to the pin.