Hello ! I have a Mikrotik Router Board RB2011 and I subscribe for a VPN account and an internet account the whole connects via pppeo client and I would like to configure these two accounts in my router to have access via the local thanks (urgent).
Well, this is possible 
Add a vpn-client of the desired type and make sure you don not add a default route to that client interface.
Then add routing and/or NAT rules to match the traffic you want to have routed through the vpn.
Done.
-Chris