Swap last pair then middle pair of 3 ringing changes (4)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Swap last pair then middle pair of 3, ringing changes Swap last two letters of “pa le (=entry at 3)” to give p ae l, then middle two letters to give “peal”!; in bellringing, a peal is when changes are rung, hence “ringing changes”