This should do what you want. There are a few oddities: only the 9 I/O pins appear in pcb (the jumpers and the I2C connections won’t translate in to pcb.) As well it is possible to daisy chain boards like this:
you need to move the rightmost board towards the left most board to make the connection, due to a Fritzing oddity the other direction will not connect.
when that is done the connections in breadboard go green to indicate connection and rats nest lines appear in schematic indicating the connection.
this is the part that you need to download and load in to Fritzing:
pcf8574-io-expansion-board.fzpz (10.1 KB)
Peter