Select the token type. You can pick between simple ERC20 tokens to extended ones.

ERC20 - Mint + Burn
Offers additional token minting and burning.

ERC20 - Mint + Burn + FlashMint
Offers additional token minting and burning + Support for flash loans.

Name is simply what you want to call your token, such as Bitcoin or Ethereum.

Symbol will be the ticker of your token, such as BTC or ETC (normally tokens have a 3 letter uppercase symbol).

Decimals is how many decimal places your token can have, which determines how divisible it is. Generally tokens will have 18 decimals, which allows 1 token to be divided into trillions of pieces (eg. with 18 decimals you could have as little as 0.000000000000000001 of a token).

Total Supply will be number of tokens available. Token Total Supply VALUE will be total number of tokens to the power of decimal places.
It will be automatically calculated to the correct decimal places.

Example
If you want to emit 10 tokens and got 2 decimals, input 10 not 1000.