Nice job! However, I have some remarks: - You don't need to Apply before Save, because Save applies first. - You don't need to Apply/Save macroloop settings, because you have already saved the macroloop settings in the macroloop window and Apply/Save has no effect on macroloop settings. - You don't need to Apply/Save after changing plugin settings, because the Configure plugins window saves all the changes when you close the window and Apply/Save has no effect on plugin configuration. - You don't need to Apply/Save the Modbus settings, because Modbus master is a plugin and UCCNC does not know anything about what the plugin does, so Apply/Save has no effect on any Modbus settings. The Modbus master plugin is written to save all its settings when you exit UCCNC.