Here you can choose whether the changes will be applied automatically in real-time as you adjust the parameters. If your computer cannot keep up with the real-time updates while you are using the tool, we recommend that you disable the option and click the Apply button to manually apply the changes instead.
If the Realtime Update option is disabled, you must click the Apply button in order to apply the changes to the objects.
To reapply the tool, click on New Transform. For example, with the Extrude tool, you can extrude multiple times using the same values by repeatedly clicking New Transform.
If you click this button, the tool will be reset to its default values.