Multi-selection

Select the non adjoining elements in a list

Click on the different elements while holding the key [Ctrl] pressed.

Select the successive elements in a list

Click on the first element, then hold the key [Shift] pressed while clicking on the last element of the selection.

Select all the elements in a list

Use the shortcut [Ctrl + A].

Modify the data in multi-selection

In all the displays  List, using the selection procedures above, select the data for which you want to perform the same modification, right-click and select the wanted command in the contextual menu.