There are two ring profiles A and B. For each SP you can select either A or B. Voice Services, SPx Service, X_RingProfile. Each profile has 10 different choices of ring pattern. You select which of the 10 using X_DefaultRing further down that same block.
The actual 10 ring patterns in each profile are defined under RingSettings, Ring Profile A (or B). Scroll down past the 10 Call Waiting Tone definitions.
If you want SP2 to ring the same as SP1, merely changing the SP2 X_RingProfile to A will probably do that. You need to clear the tick mark(s) in the box(es) at the right hand end of the line before you can change a setting.