Software Manual Writing

We have several software products for Microsoft 365 (e.g. SharePoint web parts) that we need to create manuals for, including the following sections: Overview, Installation, Configuration, Usage, Licensing, and See Also. The goal is to give the writer demos and access to the products, and then have them write the manuals mostly independently. I would like to know if you have expertise with Microsoft 365 and Microsoft Outlook, whether this mode of working is acceptable, and what a manual such as this typically costs.