General parameters > Chapter Supervisor > Parameter CALNBRDEC (Calculate number of decimals) 

This parameter is used to define the default number of decimals proposed in the calculator (this number can be modified when using the calculator via right click Decimals).

Level of localization / Global variable

The parameter is defined at the level User.Belongs to Module SUP (Supervisor) and to Group INT (Interface User),in which the following parameters can also be found :

The global variable GCALDEC is associated to it.