Where are BigQuery tab indentation settings?

How do you choose how many spaces a tab inserts in gcp's SQL workspace editor?

In some scripts it does 2, in others it is 4, and I can't find a place to control that setting

edit due to comments:

Suppose I have query:

SELECT * 
FROM `dwh.dataset.table`
order by uid, registration_date

Pressing Tab makes 4 spaces. Format Query will format it with 2 spaces:

SELECT
  *
FROM
  `dwh.dataset.table`
ORDER BY
  uid,
  registration_date

If you add something after Format Query and are using Tab - it will still insert 4 spaces on new lines, while it will do 2 spaces on existing lines some times.. eg:

Writing code after format query:

SELECT
  uid,
  registration_date,
  sum(some_column) over (
      #<- why is there 4 spaces here now?
  )
FROM
  `dwh.dataset.table`
GROUP BY 
    #<- also here
ORDER BY
  uid,
  registration_date