Unnecessary Delay Following Sets

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NFHS Rules

Following the first, second, third, and fourth sets, Team A fails to take the court until 3 minutes 15 seconds have elapsed, despite the R2's attempts at preventative officiating. Unnecessary delay is assessed (administrative yellow card) on each occasion. Team A commits no subsequent unnecessary delay in any set. As such, is there no tangible penalty... just repeated administrative yellow cards? Would you consider unsporting conduct instead?

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There's a note at the end of 9-9

NOTE:*For repeated unnecessary delay violations in multiple sets, unsporting conduct may be issued by the first referee.

I guess the follow up question should be, do you do this after the 2nd delay, 3rd, 4th?