Meaning of “plan sth out” - Learner’s Dictionary

plan sth out

phrasal verb with plan us uk /plæn/ verb present participle planning, past tense and past participle planned

to think about and decide what you are going to do or how you are going to do something:

Have you planned out your journey?
I'm just planning out my day.

(Definition of “plan sth out” from the Cambridge Learner’s Dictionary © Cambridge University Press)