Settings and activity

Forgot to mention, this can be done simply by check marks in columns, as many as your account has devices.
Also leave the possibility to sync with nobody, all checkmarks/devices are not sync, so you can keep contacts that you don't need (anymore) in your phone but would like to keep in your 'archives'.

In the meantime, you can find several on the net, I think via google, long time did not use it, sorry.