Read through the following procedure to understand how to create or modify a user to use the newly created profile and enable the required options.
- Go to Setup > Administration Setup > Manage Users > Users.
- Click New User to create a new user or click Edit to the left of the listed user that you want to modify.
- Fill all the required fields and select the profile that is newly created.
- Check Active to activate the user and Marketing User to grant permission to the user to update and add campaign members to the Campaigns through the API.
- Click Save.