Answer:
Yes, it is. To do this, open Window 1.5.
If too few nodes have been selected for the design so that the program cannot automatically determine the dimensions lx or ly in accordance with DIN EN 1992‑1‑1, 6.4.5 (NA6), Figure NA 6.22.1, you will receive a message stating that the requirements for determining the minimum bending moments have not been met.
The program requires at least four nodes to determine the span lengths in the x- and y‑directions.
In this case, you can define the minimum bending moments manually.