Your first launch

Do this once with an amount you are willing to lose outright. The point is to prove the path end to end (create, buy, see the position, sell it back), not to make money. Budget about 0.1 BNB or 0.02 ETH for the whole exercise, most of which comes back.

1. Prepare

An RPC for the chain you are on (Settings). Test it by refreshing the wallet book once.
A creator wallet with enough of the chain's coin for the initial buy plus gas. On BNB Smart Chain a four.meme create needs roughly 0.01 BNB of gas headroom on top of the buy; a Flap create can need more, because its create also makes the PancakeSwap pair.
Two or three buyer wallets, funded. Generate them in Wallets, put them in a group, and send them coin with the Wallet Funder. Each needs its share of the buy plus the gas reserve (0.0015 BNB or 0.0005 ETH) plus the gas for one buy.
Make sure the creator is not one of the buyers. On BNB Smart Chain a wallet that both creates and buys puts two transactions with the same nonce into one bundle, and the builder refuses the whole thing. The form warns about this and drops the wallet from the buys, but it is cleaner not to set it up that way.

2. Fill in the launch

Open Token Launch. Pick a launchpad, give the token a name, a ticker and an image (four.meme and Flap refuse a launch without one), and size the buys small: a percentage of supply in the low single digits, or a total in coin you would not mind writing off.

The Estimated cost panel prices the whole run before anything is signed. It lists the creator's own buy, what the buyer wallets spend, the platform fee, gas, and how far along the curve the run leaves the token. If it cannot price it, the launch is not ready; the reason is listed under Before you launch.

3. Launch

The button stays disabled until every problem in that list is cleared. When it runs, the log shows each step in order:

the metadata upload (IPFS for OneMeme, the launchpad's own host for four.meme and Flap);
the address the token will get, and on four.meme the proof that the prediction is trustworthy;
the plan for each wallet's buy, priced in sequence along the curve;
the bundle going out, with each builder's answer, and the block it landed in.

On BNB Smart Chain the create and every buy land in the same block. On Robinhood Chain there is no bundle market, so the creator's own buy is inside the create transaction and the wallets follow immediately after. See Bundles.

If the bundle does not land after six rounds, nothing was spent: the log ends with the builders' own words about why, and you can try again. The usual reasons are in Troubleshooting.

4. Check the result

The launch records a position. Open Tokens, press Refresh, and you should see each wallet's holding, the venue the token trades on, and Worth now: what the whole holding would fetch if sold at this moment, in one quote. Right after a launch that number is a little below what you spent, because the curve fee and the exit impact are already in it. That is correct.

5. Sell it back

From the same page, sell 100%. On BNB Smart Chain the sales go out as one bundle, every wallet in the same block; the log says so, and says which wallets went one at a time if any had to. The proceeds land back in the wallets that bought. If a wallet has tokens but no coin for gas, set a gas top-up wallet in the sell form rather than funding it by hand.

The platform fee on the sale is one transfer from the first wallet that can afford it, after the sales landed, and the log prints it.

6. Pull the money back

Fund Tools, Consolidate, with the buyer group and the address you want the coin in. Every wallet ends at zero.

If all six steps worked, the path is proven and the only variable left is size.