A manual row of stats can be added for any personnel tile. This feature is especially relevant for new, transferred, or traded players. 

In this example, the Last 5 Row split will be changed into a blank stats row to manually enter in the stats:

Since this change will only be made for the one player, the Players tab will be uneffected.

Now move over to the Games tab and unselect the Last 5 and add a Custom Split.

Then this screen pops up. If you select no games, it will create a completely blank split.

Verify that the stat rows are correct and hit the Save Tile button:

Then you will be able to type directly into that row in the personnel tile.