Macro IF, which can test Light overide mode state?

In this type of 'co-ordinate toggle set of functions' circumstance I tend towards using an intermediate flag. Generally use a dummy relay object set up as an on/off load object (not network enabled ) to act as such. You can create one starting with a legacy relay object for example. Possibly could also use a logic object but I like the floorplan visibility of state. Anyhow you can then toggle the state of the 'flag' using a single button and the on/off output connection outputs would then be used to to change the state of the LED flashing and light override values. Note that override and automation operating modes are controlled by parametric values, in other words you need to select a value setting connection. To get more details on what different values do probably best bet is go to a light object connections menu and click on help icon. Also, sometimes you have to check access to connections 'from the other end' if you can't find them from one side.

Thanks Karam as always. Have got most of the way there following your tuition, except:

LRN (Legacy Relay Node) object, On/Off load, Set On/Off (Output), doesn't seem to allow any Value connections (so I can set Value, override mode = 4 and 1). It's greyed out?

You should be able to access it from the light object's Override connections side. As a general comment: Connections are not always symmetrically accessible so always worth checking from the other end if can't be found from initial side.

Ah that's it, the last bit of your advice above about 'from the other end'.

Thanks Karam. One of these days I'll be able to follow your (or Viv's) advice without needing to come back with a follow up question!!