Atf filling through dipstick

[PM0077]

My apologies if this seems a daft question but would I be correct in assuming that if you're filling the atf through the dipstick tube should the engine be idling?
I have searched but have seen no mention of whether or not this is the case.

Cheers
Paul

[shokenore]

No need to have the engine running.

[PM0077]

Many thanks.

Paul