need static ipv4 setup instructions?

Looking for help on the following:

I have a fixed ip address with comcast.

The comcast router has an internal static address of 10.1.10.1

We have 3 computers using dynamic internal address’s
i.e. 10.1.10. X

Because we have a software product with a server that has to have the internal address updated manually every time the machine gets rebooted or when windows update does its update which seems like weekly, We want to make the ipv4 address’s of these 3 computers remain the same (static 10.1.10. X )

I am in need of setup instruction for the comcast smcd3g-ccr supplied router we are using at 10.1.10.1

As well as setup instructions for the 3 local machines in our ipv4 lan.

Can you please provide this?

Thank you

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