Which plaster - indoor climate and surface characteristics?

Thank you for your answer.
Is there a base coat and a finish coat in the lime plaster or lime-cement plaster structure, or is the plaster applied directly in one layer to the wall (in my case hollow bricks)?

A base coat was applied for us.
In the basement, garage, utility room, and attic, we applied MEP (lime-cement plaster) and in the living areas etc. we used red lime (lime base coat).

After that, a 1-2mm lime finish coat is applied, depending on what you want in the end. (There are also other grain sizes or smooth finishes, etc.)
We decided on a 1mm grain lime finish coat.

It was important for the aerated concrete exterior walls that we sprayed on a burn-in barrier, because otherwise the plaster would dry too quickly there and possibly burn in.
Here, a 1:6 mixture was sprayed on with a pump sprayer.

By the way, spraying took about 5-6 hours for the house.