Most add-ons are managed from their own settings pages. These settings pages are typically accessible by accessing the primary Gravity Forms Settings page, then clicking on the tab appropriate for your add-on.
If you do not see the settings page, here’s a few steps to troubleshoot the issue:
Check that the add-on is activated
This seems like a no-brainer, but individuals regularly install WordPress plugins and simply forget to activate them. Check on your Plugins page within the WordPress admin to ensure that the add-on you’re trying to access settings for is activated.
Ensure you have the correct user capabilities
Settings within Gravity Forms are dependent upon the permissions allowed to the user attempting to access them. Simply put, if the user you’re logged in as doesn’t have permission to do something, the option typically won’t even appear.
For further details, see Role and Capability Management.
Eliminate possible conflicts
To narrow down the issue, be sure to deactivate all other plugins, and switch to a default theme like Twenty Fifteen. By doing so, you can better locate where the issue is coming from.
If the issue goes away with other plugins and/or themes deactivated, slowly begin re-activating things until the issue appears again.
See Testing for a Theme/Plugin Conflict.
Check for errors
Occasionally, there might be an error occurring within the Gravity Forms code, or a conflict with another plugin or theme. If you encounter any PHP errors on your site with WP_DEBUG turned on, they may be causing the issue.