The Owner's manual was very helpful. The WEGA is about 35 years old and needed repair.
Your Website is pretty good und easily to handle.
Text excerpt from page 12 (click to view)
Attaching the Hand Strap
Attaching the Lens Cap
To protect the lens, attach the provided lens cap to the camera as shown in the illustration.
To confirm the lens cap is on correctly make sure the cap is flush to the camera.
1 Thread the end of the strap through the eyelet. 2 Pass the other end through the loop.
When carrying the camera, pass your arm through the strap to prevent dropping the camera. Tighten the strap at your wrist by sliding the buckle.