QGIS Multipart to Singleparts

Here we have an administrative polygon layer with series of Islands as seen below...

Now, we don't want the Islands to be part of the main polygon, so we have to split them apart. Thanks to the "Multipart to Singleparts" command tool under the "Vector >> Geometry Tools" menu. This command takes a vector layer with multipart geometries and generates a new one in which all geometries contain a single part. Features with multipart geometries are divided in as many different features as parts the geometry contain, and the same attributes are used for each of them.

Happy reading :)