The plate can attach to the camera or rig (cage, railblock, mirco rods,etc) easily which features 1/4"-20 screw holes via 1/4"-20 screws, and provides plenty of 1/4"-20 mounting holes for adding accessories.
It can serve as a tripod mounting plate as well. Two ARRI accessory mounts (3/8"-16 screw hole with locating pins adjacent) are also available to add ARRI compatible accessory like arm ball.