On the Left, you see the brine side of the Permeatepump. You need to get the line coming from your flow restrictor connected to the concentrate "in" port of your Permeatepump. From the concentrate "out" port you go to drain.

On the right, you see the Permeate side of the Permeatepump. You need to get the line coming from your membrane permeate "out" port directly connected to the permeate "in" port of your Permeatepump. From the permeate "out" port you go to your tank. Make sure that your hydraulic shutoff valve senses the pressure of your tank, not the pressure before your permeatepump.

There is always a way of finding the outlet ports by touching the area going from the center close to the ports. There is a small pin sticking out that indicates the outlets. This allows you to find out if the pump is installed right even if you can´t directly see it.