What are you reading, the Undercurrent report? Your post has little resemblance to mine. I do not see some of your details in the Undercurrent report either
Day 5 was Monday, it looks like they got their day 5 test early in the morning. Their boat was brought back to the dock after dive 1, after Divi was notified. It appears that everyone in the group was quarantined until after the retest. There is no information regarding additionl diving on Monday or Tuesday. The 11 that were maintained in quarantine were apparently, not allowed outside of their rooms, even on their patios.
Read the Undercurrent report if you are able.