Guest flags on a chartered catamaran

Usually I see them on the same halyard. I have seen "Seahawk" and "Vertigo" when they were on charter doing it in the past.

Multiple flags on same halyard.

hmm.

https://jimmygreen.com/content/177-... Clips, also known as,or more flags in series.

Is there a significance to which flag is higher on the halyard?

Strong zips ties, zip tie bottom grommet of top flag to top grommet of the next flag. Put them in whatever order you want. Nobody flies guest flags to start with, so however you envision it, do it.

You should not fly national flags on top of each other because no national flag should be above another.

From the old sailing ship days a flag showing the Captain’s Nationality could be flown from the opposite spreader of the courtesy flags.
So when I sailed the Bahamas the US flag was flown on the stern, the courtesy flags from the Starboard spreader and the Norwegian flag from the Port spreader.
(The Vikings of course never flew no silly flags, they just sailed in, beached their boats and grabbed the loot as well as women and weapons, then sailed back to the motherland, those days are gone)