Curve, fees and token program come from the config. Each coin gets its own whitelist.
Your dev wallet can always buy. You can add or remove wallets and end the window early from My coins; the window can never be made longer. Each listed wallet costs a refundable ≈ 0.001 SOL.
Advanced
My coins
Configs
A config is the on-chain recipe (curve, fees, token program, whitelist support). You can launch many coins on one config, or share its address with friends.
License keys
Give a key to someone and they can sign in and use the panel. Each key only sees its own wallets, configs and coins. Disabling, expiring or deleting a key signs that person out right away.
Wallets
Wallets saved on the server for your account only (keys stored encrypted). Keep only what your launches need in them, and export a key to open the wallet in Phantom. Using Phantom as the dev wallet keeps your keys in your own browser.