Put each review on a real date
For each current procedure, record its stable ID, owner role, last approved version and next review date. Choose the date from the actual requirements of the process and your organization. Put it in the owner’s calendar and use the SOP index worksheet to keep the record beside the current document.
Example: the Finance team changes its invoice approval workflow on November 6. The owner records the new version, identifies the affected handoffs and asks the named approver to review before the revised process takes effect. The previous date and version stay in the review log.
Add reviews when the work changes
A change in software, an approval role or a required record can trigger a review before the calendar reminder. Write down the change, who will review it and where readers can find the approved procedure. Test that a person with normal access can open the approved version.
Microsoft documents how version visibility and content approval depend on the library settings. A date in an index does not apply those controls. See SharePoint versioning and approvals.
See Also
If you want to move from general advice into actual product choices, start with SOP Checklist Planner Tool Template for Small Businesses, CRM Contact Import Template Mapper Tool for Small Businesses, and When to Upgrade Appointment Scheduling Software Guide.
For a wider picture after the basics, Best Document Scanner for a Paperless Small Office: 4 Picks and CRM for Beginners: A Simple Guide for Small Business Teams are the next places to read.