Macro to group and un group rows?

Among the simplest options:
1. Move sheets from different workbook to this one and use it as you would like, move back
2. The feature uses two main codes: AFon and AFoff. You can copy them to a Personal macro book (if it does not exist you can create it. The other two codes that assign actions to key combinations are sitting in ALT+F11 - ThisWorkbook. You will need to transfer them into Personal macro book into Thisworkbook and save it.