There are two ways to add tiles into a collection.

If you have already started a collection and you want to add in more links whilst in the folder, you can do this by creating a new tile.

The other way to do this, is by moving and transferring a tile from either My Tiles or Workplace.

Here is how to do it:

Choose the folder where you wish the tile to be exported.

Click Save - the tile has now saved in your chosen collection.