See video instructions here https://ads.tiktok.com/help/article/create-tiktok-business-center
Step 1: Sign in to TikTok Business Center
Step 2: Create a TikTok Business Center account
To Give a Partner Access to Your Assets
To help brands create a unified brand image across all of TikTok’s monetization and business products, TikTok For Business supports linking a TikTok account to a TikTok For Business account. You can link the accounts when you create a TikTok For Business account or connect the accounts after creating a TikTok For Business account.
Register a TikTok For Business with a TikTok Account.
One key benefit of this feature is you can use your TikTok account to create a TikTok For Business account. Registering for TikTok For Business with your TikTok account will automatically link the two accounts.
You can create a TikTok For Business account with your TikTok account from the: TikTok For Business Sign Up page and the TikTok For Business Log in page.
On the TikTok For Business Sign Up page
On the TikTok For Business Log in page
Link an existing TikTok For Business account with a TikTok account
There are three ways you can link a TikTok account with your current TikTok For Business account.
From the TikTok for Business Login page
From the TikTok For Business User Settings page
Linking accounts from the Ad Creation page
Add a payment method in Ads Manager
You can add a payment method in either Business Center or Ads Manager.
To add a payment method in Ads Manager
Go to your Ads Manager -> Payment page and add a supported Payment Method to your account, like a credit or debit card.
Add a payment method in Business Center
Note: You can only add a payment method to ad accounts owned by the Business Center.
Find your Pixel ID in Event Manager
Add a Pixel to your Business Center
Pixels can be created in Events Manager by an ad account. In order to start sharing the Pixel, the Business Center admin must transfer the Pixel from the ad account to the Business Center.
Grant Pixel Access to an Ad Account
Grant Pixel Access to a Partner
Click here for more info on installing tracking codes.
Click here for more info on configuring tracking codes with Google Tag Manager.