That’s the correct way to change them.
I’m wondering if you are trying to enter the accrual rate in Decimal format & the Preference is set to Minutes (or vice versa) ?
You can check/change this under the Preferences:
Shaz Hughes Dip(Fin) ACQ NSW, MICB
Reckon Accredited Professional Partner Bookkeeper / Registered BAS Agent (No: 92314 015)
Accounted 4 Bookkeeping Services
0422 886 003