In Relation we can access to some parameters of Mechanism features like friction in Connection (see pictures)
but not for Cams, 3D Contact, Gears & Belt parameters, is there a work around?
Could it be added in a futur release of Creo
See if maybe this helps:
Somewhat related product idea here:
It is partialy answer to the expectation, But not for cams parameters or Belt or 3D contact.
As an example here is the parameter for Cam we would like to get access: