Dear boyoung kim1,
Thank you for reaching out to the Microsoft community.
We'd love to help, but considering we mainly focus on general and built-in queries in Microsoft 365 applications, we may have limited resources about Office2016.
At the same time, considering we have a dedicated channel Office Management - Microsoft Q&A, for you to be assisted properly, we sincerely recommend you go to that community and post a new thread, members and engineers over there will focus on the specific situation on your side and share specific suggestions. We are sure that our experts from that team can address your query effectively and accurately.
Thanks for your understanding and cooperation! Hope you keep safe and healthy always.
Sincerely,
Sean | Microsoft Community Moderator