How to allow access to some IPs past OpenVPN?

Question

linux

I'm using an OpenVPN connection and I want to be able to access some IPs (local and non-local) past the VPN connection.
OS: Ubuntu 14.04
Package: network-manager-openvpn-gnome
Is there any way to implement this?
It is assumed that there are three VPN connections to the same server, differing only in routing:
1. General - everything goes through the VPN
2. Home - everything goes through the VPN, except the local network
3. Work - everything goes through the VPN, except the local one network and some external IP
It is highly desirable that these routes themselves be created and deleted automatically when connecting and disconnecting to OpenVPN.
Perhaps there is a way to specify scripts to be run during VPN connection and disconnection. Then it would be possible to write adding/removing routes by hand.

Answer 1

in client config

up "/etc/openvpn/route-bee.sh up"
down "/etc/openvpn/route-bee.sh down"

$ cat /etc/openvpn/route-bee.sh
#!/bin/bash

[ -x /sbin/ip ] || exit 0

case $1 in

up)
    /sbin/ip route add 10.10.1.0/24 via 10.10.1.2 dev tun1 table beeline
    /sbin/ip route add 10.10.1.0/24 via 10.10.1.2 dev tun1 table soyuz
    ;;
down)
    /sbin/ip route del 10.10.1.0/24 via 10.10.1.2 dev tun1 table beeline
    /sbin/ip route del 10.10.1.0/24 via 10.10.1.2 dev tun1 table soyuz
    ;;
esac

enter the required routes