Install bed corner posts as shown. Install bed corners using a M3 x 12 SHCS, M3 washer and a extruder (bed) spring. Set the end of the bolt flush with the bottom of the plate for now. Install bed finger as shown using a M3 x 12 SHCS and M3 washer. Repeat in all 4 corners.
Set the table in the fixture. Using 4 M3 x 12 SHCS, attach the belt mount to the table as shown. Note orientation in picture.
Install bearing holders using M3 x 12 SHCS and M3 Washers. Make the bolts tight enough that the bearing holders can't move up and down, but can still move side to side.
Install the 2 belt clamps using 4 M3 x 12 SHCS and 4 M3 washers. Leave the belt clamps loose at this point.