Attention:

The tolerance of the cursor is very important as it represents the sensitivity of the mouse around the graphical objects, whether they are support works or vertices of points.

To move and/or modify an object or a vertex (profile, layers, groundwater, loads, etc.) position the mouse pointer near the object to be modified; When the pointer changes form you can make the changes by clicking on the object. You can modify the element only if the mouse pointer is contained within the radius defined by Cursor tolerance.