Can additional Accounting calendars be created for Finance, without affecting Sales cloud?

Client has been using Sales Cloud for over 10 years now, using the original Accounting Calendar from the initial setup. They are now implementing Finance into their existing fusion environment and need to create additional Accounting Calendars. We just want to be sure that nothing on the sales side is effected. My understanding is that if they don't touch the ZCA_COMMON_CALENDAR profile option, then all should be fine on the sales side, but wanted to confirm