Once your ticker is reserved, you can create your security token using the Polymath dApp here:
https://tokenstudio.polymath.network/dashboard/<<YOUR TICKER SYMBOL>>/providers where <<YOUR TICKER SYMBOL>> should be replaced by the ticker symbol you initially registered.

Creation of the token will require that the wallet used to register the ticker be available via metamask. If you are unable to access your wallet using metamask (Ledger Nano, etc…), you can still create your security token using MyEtherWallet and subsequently transfer ownership of the token to a metamask wallet, so all operations with the token can be performed via the dApp.

To do so, please use the following steps:

Approving POLY Payment

Creation of a token is associated with a POLY fee (more details here). Since POLY is an ERC20 token, the payment must be approved on the token contract before it can be completed

Enter the POLY Contract Address in MyEtherWallet

• Visit MyEtherWallet here: https://www.myetherwallet.com/#contracts
• Select “Contracts”
• In “Contract Address”, enter:
  • Mainnet: 0x9992ec3cf6a55b00978cddf2b27bc6882d88d1ec

Enter the POLY Contract ABI in My EtherWallet

• In a separate tab, visit the POLY token page:
  • Mainnet: https://etherscan.io/token/0x9992ec3cf6a55b00978cddf2b27bc6882d88d1ec
• Select the “Code” tab

• Scroll down and copy the ABI

• Go back to your “MyEtherWallet” tab, paste the ABI information in the “ABI/JSON Interface” text box and select “Access”

• Under “Select a function”, select “approve”

• Under “_spender Address”, enter the address of the security token registry:
  • Mainnet: 0xef58491224958d978facf55d2120c55a24516b98
• Under “_value uint256” enter “250000000000000000000”
  • Note: At the time of writing, the POLY fee associated with a Security Token Creation is 250 POLY. For latest pricing, please consult this article

• After connecting MyEtherWallet to your wallet, click “WRITE”
• Click on “Generate Transaction”

• Confirm the transaction by clicking on “Yes, I am sure! Make transaction” 

 Your wallet will now open, asking you to confirm the transaction. Proceed with the confirmation (See example below using Metamask)

The POLY fee is now approved with the Security Token Registry (please check the transaction), and we can proceed with the Security Token creation

Configuring the Security Token

Enter the Security Token Registry Contract Address in MyEtherWallet

• Visit MyEtherWallet here: https://www.myetherwallet.com/#contracts
• Select “Contracts”
• In “Contract Address”, enter:
  • Mainnet: 0xef58491224958d978facf55d2120c55a24516b98
  • Kovan: 0xced6e4ec2ac5425743bf4edf4d4e476120b8fc72

Enter the Security Token Registry Contract ABI in My EtherWallet

• In a separate tab, visit the Security Token Registry page:
  • Mainnet: https://etherscan.io/address/0xef58491224958d978facf55d2120c55a24516b98/#code
• Select the “Code” tab

• Scroll down and copy the ABI

• Go back to your “MyEtherWallet” tab, paste the ABI information in the “ABI/JSON Interface” text box and select “Access”

• Select “generateSecurityToken”

• Enter the details of your token
  • “_name string” is your Security Token name
  • “_symbol string” is the Ticker you reserved
  • “_tokenDetails string” is a URL which includes additional token information, such as a self executing legend, for example
  • “_divisible bool” - whether your token should be divisible or not

To create:

• After connecting MyEtherWallet to your wallet, click “WRITE”
• Click on “Generate Transaction” and confirm the transaction by clicking on “Yes, I am sure! Make transaction”

• Your wallet will now open, asking you to confirm the transaction. Proceed with the confirmation (See example below using Metamask)

Your token is now created and live on either Mainnet or the Kovan Testnet