This is how to enable multiple pointer for each mouse attached in your computer:
-
Open a terminal and type in
xinput
(all commands should be done as normal user). -
Look at the id of the one of your mice.
-
Create a new master device with this command
xinput create-master "name"
-
Now you just need to reattach one of your mice to the new master
xinput reattach device_master_id new_master_id