Through the "Type of machine" which can be accessed by clicking on the menu item "Type of machine" menu, you can create and manage groups of machines and assign to each family the machines in question.
In particular (fig. 1)
 

• Section 1 allows editing and inclusion of families
• selecting a family by clicking on the magnifying lens next to the name will appear the section 2 that shows and allows you to view or delete the associated machinery
• to associate machines to select families select them in section 3 (pop-up) and click "Add machines". The use is quite similar to the other switches of this type, which allow search through the box at the top and multiple selection through the use of the ctrl key associated with the click of the mouse