negotiate, work out together

I work out the schedule.

私は日程を協議します

I work out the delivery schedule.

私は配送日程を協議します

I work out the delivery schedule with the client's contact person.

私は取引先の担当者と配送日程を協議します

I work out the delivery schedule with the client's contact person in the meeting room.

私は会議室で取引先の担当者と配送日程を協議します

I work out the delivery schedule with the client's contact person in the meeting room tomorrow.

私は明日会議室で取引先の担当者と配送日程を協議します