[SOLVED] Can't activate "Display available quantities on the product page"

[Nickovitshj]

PrestaShop: 1.7.6.5

In Shop parameters > Product settings.
I can't active "Display available quantities on the product page"  my mouse is showing a forbidden icon when hovering over it.
I'm currently using multistore, could this be a reason?

 

See attached image

Edited November 2, 2020 by Nickovitshj (see edit history)

[Nickovitshj]

SOLVED

On the same page you have to enable "Stock management"

Afterwards you can enable to display quantities on product page.
Pretty simple fix but it isn't documented anywhere...