You can give panadol NO MORE than 4 times in any 24hour period and
Nurofen NO MORE than 3 times in a 24 hour period.
So whether you give the panadol 4hourly (waking hours only) or 6 hourly (around the clock) the maximum dose per 24 hours remains the same.
Panadol overdoses are quite serious and the antedote is way worse.