Tips for Writing the Organization Background Component
Start with when and why the charity was created. Its mission statement should be front and center in the first or second paragraph. From there, move away from the philosophy of the organization and begin explaining what it does.
This is one of the few sections of a proposal that you can create as a boilerplate and use over and over. You may be required to tweak it here and there to highlight items of special interest to a particular funder. Otherwise, this section is fairly standard for most proposals.