You might consider using Service Bundles to offer various tiers of service to your customers, such as a Standard or Premium tier. You could tie in more support hours or more advanced products according to your customer's needs. This is a great help in keeping your pricing transparent and standardizing your offerings.
To get started in zomentum Connect, override a product by selecting a Service via its configuration window.
a customer buys the following:
5x Microsoft 365 Business Standard
10x Microsoft 365 Business Basic
Based on the number of licenses you will add a support or service plan.
In your PSA you have a service bundle or a Service:
Support plan + Ms 365 bus stand
Support plan + Ms 365 bus basic
In your contract, you will connect the correct service that you use for this customer.