Adding Issue Types to Issue Type Scheme

1. Navigate to Project Settings > Issue > types > Actions > Edit Issue Types > Issue Type Schemes
2. Select the project to create tickets on and click Edit.
   
3. On Modify issue types scheme move newly created issue types from the Available issue type table to the Issue types for current scheme table.
4. Click Save.

Now that we have added the issue types to the Issue Type Scheme, let's proceed with Creating Custom Fields