Q: I have troubles with the colour bar in the grid scale?

A: When you are in Define Grid and Set manually scale grid, be sure to tick the box Manual Scaling before you define the interval you want to show in the grid. Choose the parameter you want to change.
If you still cannot make the exact scale you want there are some possibilities to adjust the range and colours in Option/Program setup/ grid colours.
When you have found a good grid scale setup, you can save it in Set manually scaled grid pressing (Ctrl S).