LH Y Seat Selection

[yvrcnx]

I am taking my little family to Europe in September and decided to take LH.
We will be flying in Y, 3 of us, and I am wondering if it is possible to do a seat selection during the booking process, similar to SQ?

[9V-JKL]

Not in Y based on passed experience 3 yrs back, you can only request for Window or Aisle.