Standard Operating Procedures are essential instruments for ensuring consistency, regulatory compliance, and data quality in clinical research. Despite their recognized importance, SOP authoring remains a largely manual, unstructured process with limited tooling for systematic, multi-centre creation. This paper proposes WizarDoc, a modular, AI-assisted questionnaire-driven web application designed to streamline the production of SOP-aligned clinical study documentation. WizarDoc combines reusable template pools (governed question sets plus DOCX layouts) with a step-by-step wizard that dynamically generates contextual questions and AI-driven answer suggestions via a Retrieval-Augmented Generation (RAG) pipeline grounded in authoritative clinical standards. Captured identifier-keyed responses are exported as populated DOCX documents. The tool is publicly available at https://github.com/ieeta-mith/wizardoc.