You can navigate to PsoC creator: File-> Code example and refer to the following two CEs.
SJW is synchronization jump width. the value must be less than or equal to Tseg1 and Tseg2.
Sample point is the point in time at which the bus level is read and interpreted as the value of that respective bit.
So, sample point can be set at a maximum value to allow for higher propagation delays.
You can also refer to PSoC architecture TRM and CAN specification. I hope this helps.