Configuration of Mikrotic router for vpn

I am new to Mikrotik routers, and I am having a lot of trouble configuring a newly bought one.

I have managed to configure the router as a bridge switch on my network (ip address 192.168.1.250 with gateway 192.168.1.251) and I have created a pptp vpn to an external pptp server.
I have also enabled Nat with action Masquerade.

What I would like to do is:

All traffic from ports 2 and 3 should go only to the vpn server
Traffic from ports 4 and 5 should go only to the local network (192.16.1.0/24)
traffic from wifi should also go only to the local network.

Is there anybody out there that might help me with a configuration that would satisfy my requirements?

Thanking you in advance

Question for you, why is port 2 the master port if you want traffic from port 2 & 3 to only go through the vpn?

It would make more sense to configure ports 2 & 3 in a separate network.

In fact port 2 is NOT a master port. The name has been generated by default when the router was set up as a bridge, and I have not yet changed the name. All of the ports (including port 2) have currently master port set to “none”