JWT Access Tokens for LTI2 Tools

Community Novice

I was going through the process of creating a JWT access token to use for the subscriptions webhook API described in this link: ### JWT Access Tokens for LTI2 Tools - Canvas LMS REST API Documentation 

I have signed the JWT but for the final step, I need the initial registration request sent from Canvas as a parameter named oauth2_access_token_url. 

According to the instructions, this can be retrieved when you enable the "Send Authorization URL in LTI2 Registration" flag under the account-level feature flags. 


I have gone through the Canvas admin guide and other resources online but have failed to find this flag. 

The closest I have gotten to this is the "LTI 2 Reregistration" flag which is already enabled.

Can someone please help answering where this flag can be enabled and where the URL gets sent to in order to create a JWT access token?