Select Custom tiles tab.

When a mosaic is complete, you have the option to replace some tiles with custom images. These
images don't need to be in your tile library; they are selected and applied as individually saved images
from somewhere on your computer. You might insert custom images as a sort of personal signature, or
as a hidden picture riddle (as in a "Where's Waldo?" puzzle book). Or you might need to make sure that
a particularly well-liked image is not passed over as a tile; for example that Uncle Ernie appears
somewhere in your final mosaic.
You may place these tiles in a position of your choosing, or you may place them in one of the most
suitable (by shape and color) positions as calculated by Mazaika.
First, choose the drive and folder where your custom picture is saved. Click on the picture filename. You
will see picture at the top left corner of the window. The image will preview with a crop indicator around
the picture to mark the area of the picture that will be used as a tile. You may resize and drag this border
before inserting this custom tile into your mosaic.
To place the custom picture in a specified position: Click on the tile in the main window where you want
to place the custom tile. You'll see the location's description on the Manual tiles status bar. To preview
the custom-placed tile, press on the filename in the file list. To apply the tile press the Replace button or
double click on the cell you want to replace in the main screen or press the Enter key while the cell you
want to replace is selected in the main screen.
To place picture in the best position: Press the Find button. You'll see a preview of your custom tile at
the best-suited position determined by Mazaika. A box in the bottom of the screen with indicate the row,
column, and priority chosen as the best position. To apply the tile press the Replace button or double
click on the cell you want to replace in the main screen or press the Enter key while the cell you want to
replace is selected in the main screen. Or just double click on the tile position in the box, that your
prefer.
Find - Press this button to show you a Candidates list.
Replace - Press this button to replace current cell in the mosaic.
Close - Press this button to close Manual tiles screen.