For FL:
If an association places a registered ECO on a playoff crew as exclusive ECO, that association must also provide an additional alternate field official. The alternate field official will be paid by that alternate’s association.
Interesting though, I didnt read anywhere as to the procedure if someone goes down & the ECO is NOT a dedicated ECO.... I suppose the ECO replaces the official & either do the clock on the field or get a guy off the street to do ECO.
Only for the State Finals are the chain guys officials - and as far as I know they are not paid