How to use third party sofware in a snap

Yes… I know… I asked for it last year

But I could not get to be published as classic. The snap is only to be used in my job, but I was told that if we change the private to public, it could be a risk… I understand that. That why I ask this way

For now, I can do that, but what happens to software that need third party scripts configured by the final users?