A conceptual design varies in form depending on the specific work.
If it’s business processes then a process classification framework is developed to identify major steps, system/environment requirements are listed, performance objectives are detailed, and success criteria are defined. The bulk of the work is done by the client with our assistance.
Detailed development entails writing/building the actual work.
In this case, we are responsible for the bulk of the work with the assistance of the client who participates in defining requirements, reviewing and accepting our work. In the case of development or improvement of business processes, we will write/improve all the related business processes, policies, and procedures. Upon completion, the processes would be ready for immediate use.