Here's how:
1. If you don't have one yet, start by signing up for a Coins.co.th account.
2. Convert your Crypto to Thai Baht (THB).
Before placing a Cash Out transaction, you would have to convert your Crypto to Thai Baht (THB) first. From your Crypto wallet, just click on "Convert" and enter the amount you would like to cash out then press "Sell".
Once the funds are converted and transferred to your THB wallet, you can now make a Cash Out transaction or buy other coins.