Instructions
Launch Roblox and log into your Roblox Builder's Club account using your username and password.
Go to any game that has other Builder's Club members that play in them. Click on the Builder's Club character. Builder's Club members can be picked out by the "BC" script on their character.
Select the "Buy" button next to an offered item on the user page.
Click "OK" to give the user tickets for the item that the player is offering.