I worked in 2 Big 4 consulting companies. We had global processes, templates and tools for Transaction Advisory Services. Mostly we used internal M&A Playbook, internal templates (Charter, Risk Register, etc.). We had an internal knowledge base with all templates, examples, processes, etc. We took what we need and adjusted for specific client (depending on industry, project size, complexity, et.c). Sometimes, when requested by the client, we had to use cent’s tools and templates.