How to add larger denominations earlier in a tourney

[coolio4433]

I understand the coloring up process, but I can't find anywhere how to add a larger denomination chip into play prior to it's turn in the color up process.

ie, say I started with $5, $25, $100 chips and wanted to add a $500 or $1000 when the $25 were being colored up to $100.

Would you just have individual players buy the larger chips to get them into play?
How is this handled in a huge tourney like WSOP or WPT events?
TIA