There used to be a teleport item in the menu under Accounts
or Network
if I recall but I see this is no longer there. But worry not, there is a way :)
You will need to craft an extrinsic from the Developer
/Extrinsics
Menu.
To get start started, I created a template transaction for you:
https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fwestend-rpc.polkadot.io#/extrinsics/decode/0x630103000100a10f030001010096d522d22a25ff4b30146d13e274a6c940be96f191e3e13b524d9040c6bdd4190304000000000b00a0724e180900000000
Clicking on that link will open PolkadotJS and show you a transaction you can edit as shown below:

First click the Submission
button/tab so you can edit the tx:

Make sure to send the tx from an account of yours that has enough funds.
Here is a screenshot of the XCM call, it shows the relevant information:

Here are a few caveats:
- select an account of yours
- your account should have enough funds
- provide the right parachain ID, westmint is
1000
- the fungible amount is in units, so 10 WND = 10_000_000_000_000 (+ 12 zeroes)
- make sure the
feeAssetItem
is 0
Note that upon transaction success, you will need to wait a few more seconds (usually less than 12s) on the parachain for your WND to show up on Westmint.
See you on the other side :) and have fun.