Bulk operations allow you to perform various actions on multiple boards at once. This can include archiving or unarchiving boards, and setting boards online or offline. 

To perform bulk operations: 

1. Go to Company Admin > Boards > Bulk Operations. 
2. Enter the IDs for the boards on which you want to perform bulk actions. Board IDs should be separated by commas (e.g., 1122, 3344, 5566). 
3. Select the operation that you wish to perform: 
   1. Archive
   2. Unarchive
   3. Set Online
   4. Set Offline 
4.  On the confirmation message, confirm the action.