Hi @gozdeekavas, you might try to change that placing your point not by "slope to surface" but by "DeltaX on Surface". The "DeltaX on Surface" point type gives you the chance of choosing a delta Y for layout view, which means that even though it relies on a surface to be generated, in layout mode, SAC or Civil3D will generate a Link with a length according to your preference.
I hope this helps.
Best regards!
Camilo Fernández
Civil engineer | Specialist in design, construction, and maintenance of roadways