I require the creation of a customized project Work Breakdown Structure template in Microsoft Visio. The template must allow the depiction of project tasks, subtasks, and sub-subtasks arranged in a hierarchical structure spanning three levels of detail. It is imperative that the template permits the manual input of text details into two descriptor fields for each item. A third field needs to display associated British pound monetary figures pertaining to costs. Color-coding performance indicators through a red, amber, green (RAG) status mechanism must also be supported. The finished, customizable template will serve as a work-tracking tool to facilitate planning, resourcing, and oversight of multi-pronged initiatives. Advanced formatting and styling options are not essential, but efforts should be made to generate output that is visually clear and logically organized. User manuals or guidance on effectively utilizing the template would prove beneficial. Experience producing customized templates and knowledge of project management principles are preferred for this competent execution.