When writing the playbook, you need to add several sections so that you can use it as a training manual. If you have not added all these sections, the new hires will not have any idea what your company is about. You want the playbook to give people a good sense of the personality of the company, how the company serves customers, and how the company came to be.
Start with the history of the company and explain what it is all about. Everyone that works with you needs to know what the company is like, how the company operates, and the hierarchy within the company. This makes it much easier for your sales team to understand what the culture is like. If you have not explained the company culture or personality, it is difficult for your staff to know what you want from them.