This is the 832nd most frequent Chinese word.
舉行
To hold or to conduct (an event).
Here, "舉行" means "to hold" or "to host an event" indicating that the action of organizing an event is taking place.
學校將於下週舉行運動會。
The school will hold a sports event next week.
In this sentence, "舉行" again implies organizing or hosting, specifically seminars in a corporate context.
那家公司經常舉行研討會，分享行業知識。
That company frequently holds seminars to share industry knowledge.
The word "舉行" is used in a formal context here, suggesting the official or planned nature of the charity event being organized.