Randomize in tables

I am wondering whether there is an opportunity for choosing random names with some conditions. I read about diffierent random functions from random package, but they choose only one number randomly. I also thought about function, but did not come up with idea how to write it properly.
I have a table with many columns (~15) and I need to choose some random names (no exact number) which total sum is less than or equal 500. Hence, here I need to get two names AQ2 and COR and then I will extract other information from the table.

name sum city
AQ2 400 N
L3K 50 L
COR 100 Q
… … …

Could you, please, advise me how to perform it?

Thank you in advance!

The question has already been asked and answered (3hrs ago) here:

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