This is the 4814th most frequent Turkish word.
düzenleyeceği
"Will organize" or "will arrange."
Here, "düzenleyeceği" refers to the act of organizing or arranging an event (the party), indicating future intention and possessive relation to the subject "Ahmet."
Ahmet, bu akşam arkadaşlarına düzenleyeceği partiyi planlıyor.
Ahmet is planning the party he will organize for his friends tonight.
In this sentence, "düzenleyeceği" is used to describe an event (the meeting) that the subject of the sentence (the woman) will organize in the future, indicating ownership and future action.
Kadın, önümüzdeki hafta düzenleyeceği toplantı için hazırlıklar yapıyor.
The woman is making preparations for the meeting she will arrange next week.
"Düzenleyeceği" here refers to the activity that the teacher plans to organize and it shows the connection between the teacher and the future event in terms of planning.