Changing default navigation app for google now ?

[zing lee]

Ok so i figuired out how to default waze and you all are welcome, disable maps by holding down the icon in apps log and drag it to disable, then google will only recognize waze tada

 

[Farrukh Aziz]

I found an easier way. Install "Default App Manager" from play store. Then select Waze as default app for Geo Location.
From that point on, waze will be your default app for locations. I tried it with Google Assistant, saying "navigate to work" launches waze app with my work address.
Tried on S8 galaxy.