HifiBerryDac + Display

My volumio runs on a raspberry pi b+ with HifiBerryDac+ analog very nice.
Now i have justed ordered a 4x20 display HD44780.
How to use the GPIO and the HifiBerry at the same time?

Can someone give a a few tipps?

Thanks TaToosh

My Pi has 20x4 LCD and I am using the similar Hifiberry Digi which only uses 5V power and ground from the GPIO and everything else is from P5 header (8 pin block). The LCD can be configured to use non-conflicting free GPIO pins to operate in tandem.