Install

Register the app in your project settings like that :

INSTALLED_APPS = (
    ...
    'crispy_forms',
    'crispy_forms_foundation',
    ...
)

Then append this part to specify usage of the Foundation set :

# Default layout to use with "crispy_forms"
CRISPY_TEMPLATE_PACK = 'foundation-5'

If not defined, the default template pack name used is foundation-5, also you can use foundation-3 but pay attention that is not really maintained.

All other django-crispy-forms settings option apply, see its documentation for more details.