1. Avoid calling when the leader is busy or resting. For example, leaders may need to have a meeting in the morning or work overtime at night, so it is best to call at an appropriate time in the morning or afternoon.
2. Understand the leader's schedule and see if he/she has time to answer the phone. You can get this information by looking at the leader's schedule or asking other colleagues.
If the leader is busy or can't answer the phone, consider sending an email or calling later.
4. Before making a phone call, simply prepare what you want to say, including the main points and questions. This helps to make the call clearer and more targeted.
In short, it is best to consider the leader's itinerary and timetable before making a phone call to ensure that the call time you choose is the most suitable.