How to move those thingies?

Quote from Dario378 :

How to move those thingies?

You just click and drag them or click the arrows on either side. They're enabled my changing the values to somehthing > 0, the added mass position depending on the added mass.
I think as with all other settings too, you have to create a custom set though.

And they do not work with the default setup.

Oh I can use it
But I always thought that I can't use it cuz the colour of letters