Trying to do a moving average visualisation of 92 objects specific fault occurrence using a 7-day window

Want to clarify about Window Size i can't seem to infer the unit of measurement. Days Hours Mins weeks?
How can I adjust my moving average window?
Yes I mindfully did a normalisation of y-axis (xxx/days). Before normalisation, my MA never exceeded 1.
I read the docs but I can't seem to find a good answer.

Also, I'm not sure if I setup correctly

My config
