WT has been telling Jehovah what to do for 134 years. "Jehovah's arrangement" = whatever WT says it is. The 'doctrine/policy du jour', nothing more.
"Jehovah's arrangement" is on par with "spirit directed" and "Jehovah's Organization"- you'll only find it in the ethereal theological concepts of WT, no where else.
1 Corinthians 14:33) . . .For God is a God not of disorder but of peace.. . .
Translation: "Donate, obey and be blessed."
(1 Corinthians 14:40) . . .let all things take place decently and by arrangement.
Translation: "Donate, obey and be blessed."