She works in admin.

她在行政部门工作。

《牛津词典》

In admin Approval Mode, the UAC dialog box appears every time that you try to perform an action that requires administrator privileges, whether you are running as a standard user or an administrator.

在管理员批准模式下，无论您是作为标准用户还是管理员运行，每当您尝试执行需要管理员特权的操作时，都会出现UAC对话框。

youdao

This is the ultimate app for mariners who are in need of organizing their boating admin.

CNN: iSail: Seven apps to set sail to

Speaking as a 45 year old, I have currently been in work for 7 years and hope to continue but cut backs will be made in November for my grade of Admin Assistant.

BBC: What you've said

Often, admin employees do not feel empowered to say no to people in the workplace, even when they get requests that are not their responsibility, and all this does is give people too much work.

FORBES: The Backdoor Assistant Trap