Werner,
You tie off one end of the righting line to the compression post directly under the mast. Then thread through a grommet in the tramp at the base of the mast. I use a half hitch keeper knot on top of the tramp to keep it from sliding down the compression post. Stow the remaining righting line in the middle tramp pocket. When you capsize (not IF

) pull the righting line out of the pocket and drap over the hull in the air. You should know what to do after that
Glad to help out and welcome you to the Hobie gang here in Michigan.
John