I want to configure Workflow Manager 1.0 for FBA user in SharePoint 2013. Please let tell me how to configure it. I tried to configured it, and also user are shown in user profile service. But when I try to start workflow with FBA it gives "Access Denied Error".
There is no special configuration to be done. When you configure FBA you are actually configuring claims authentication - and that claim is what is getting passed.
If you have not already - you also need to configure the user profile service. The user running the workflow needs to have a profile created in the user profile service. Also ensure you have deployed and there are no issues with the App Management service as well as Secure Token Service.