For the side columns use wall anchors and hammer them into the holes.
How to put a shower door together.
Hang the doors on the track making sure the handles do not interfere with each other.
Align the outside door handle with the holes in the doorframe.
Repeat this with the right column.
Stabilize the assembly by drilling a pilot hole and driving a inch screw through the outside face of the base track wherever it meets a vertical frame member.
Attach the interior handle and tighten the setscrews.
Screw together the frame.
Use your tape measure to check whether the opposite edge of the door is plumb or running straight up and down where it meets the strike side jamb.
Hanging the door panels.
Insert the hinge rail into the hinge side jamb.
How to install a quadrant shower enclosure including shower tray.
Install the door handles that come with the kit.
Installing the door panels is easiest from outside the shower.
This shower enclosure installation video from roman showers showers how to install a roman.
Prepare the doors by installing roller and if applicable handle towel bar hardware.
Place the rollers on the top frame flange of both door panels and secure them with lock washers and machine screws.
Upgrading an old shower is a great way to refresh your bathroom.