
Danik
Hi there!
The easiest way is probably to import the two images with Import > Image, then create a new tiled document with enough frames, and then using the selection tool to select and copy (Ctrl+C) and paste (Ctrl+V) the images into the new document.
If the images are exactly the same size, you can also import them into a open document with File>Import>Import tiled image, and chosing "Identify tiles" and "Tiles to current document". In this case the tile size in the document must be the same size as the images.
The easiest way is probably to import the two images with Import > Image, then create a new tiled document with enough frames, and then using the selection tool to select and copy (Ctrl+C) and paste (Ctrl+V) the images into the new document.
If the images are exactly the same size, you can also import them into a open document with File>Import>Import tiled image, and chosing "Identify tiles" and "Tiles to current document". In this case the tile size in the document must be the same size as the images.