For phone call meetings with multiple people, plan ahead. Schedule a phone call as you would schedule a meeting, using a calendar tool and booking the time with each person. If you're using Microsoft Outlook to schedule, I do not recommend relying on the time translator for meeting invites. (The time translator in Outlook is designed to deliver meeting invitations to each person using the appropriately adjusted time zone for where they are located.) I don't recommend depending on the translator because some of the people I work with travel and then meeting times are incorrect for them in Outlook. Rather than trying to determine who will be located where at the day and time of meetings, I suggest identifying the time zones for all attendees as part of the meeting invite. For example, 9am CST, 10am EST and 5pm in Moldova. In my experience, if I calculate the time incorrectly for someone, they will tell me. Consider adding a statement in your meeting invite asking people to let you know if you have scheduled time incorrectly.