You can find a great deal of information about designing a plan in the Community Tool Box. See in particular Chapter 8, Section 5 on Action Planning, at /en/table-of-contents/structure/strategic-planning/develop-action-plans/main, and the other sections in Chapter 8 on planning more generally. There is also a toolkit on planning that accompanies these materials.
We think these resources will help you in your task, and we send you best wishes for success.
