Select Edition means you can select whichever Office Edition you want to install whether it is Standard, Professional Plus, Visio or you want to install different products individually, you just have to select from the menu as shown below

Activator works on 32 and 64 edition of Office 2010 and Windows 6.0 or newer.
Activator has following functions:
Activation of Office 2010 VL products
Activation status check of Office 2010 products
Trial reset for all Office 2010 products and Windows 6.0 or newer
Entering of KMSClient keys for all Windows VL editions
Activation of Windows 6.0+ VL products
Activation status check of Windows 6.0+ products