Okay, that model has only relays, and no DC solid-state outputs.
The relay "commons" are grouped together, both to fit the terminal count of the MicroLogix frame and to provide the mix of voltages or functions that most users will need.
Terminal "VAC DC0" feeds Output 0
Terminal "VAC DC1" feeds Output 1
Terminal "VAC DC2" feeds Outputs 2 and 3
Terminal "VAC DC3" feeds Outputs 4 and 5
Terminal "VAC DC4" feeds Outputs 6, 7, 8, and 9
The relays inside are identical, so the ampere capacity of all outputs are the same. The limit of 8A per output Group applies, as well as the ampere limit per relay.
In my humble opinion the group common wires should just read "V1" or "G1" instead of "VAC DC x". But I'm not a specialist in IEC-compliant multilingual product labeling.