Answer:
They should put, weddings, party's, Important exams or test, upcoming vacations, and appointments, and if if they have something planned for a evening.
Explanation:
These events mentioned are important, because when you look at your personal calendar, you will know what activities you will be doing, and you will remember to be prepared for them ahead of time.
A personal problem is one that only relates to ones self
Are you gonna show us the sentences?
