Tiny Best Set arcade games goes where?

Hello.

I just got my RG35XX+, it's my first foray into this emulation thing. Now I'm adding roms, to my 2nd card, from Tiny Best Set. I'm using the modded stock "os" from TomDuhamel btw....

In Tiny there is a Arcade folder with games, but the console never created an Arcade folder when I booted it up with the new card in it. Where should I put these arcade games?

There was also a problem with Sega Master System but I managed to figure out that the folder was called SMS on the card instead of MS (which seems to be the standard naming) as it is in the Tiny Set. Does anyone know what going on there?

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Thank you in advance...