I must be missing something, but I

[hushed grotto]

I now have a actionable notification being send after the automation starts, but isn't really the way I would like it.

[midnight narwhal]

So, how would you like it….?

[hushed grotto]

I'd like to enter a pincode or maybe just a confirmation directly after hitting the action button.

so from within the automation of somekind

[midnight narwhal]

I would say your only option is to have the action launch a Home Assistant dashboard that serves as your PIN pad.