From what I understand (and have tested) in What is the difference between Group Policy and Registry Policy processing in Windows?, computers within a domain would have a policy refresh every 90 to 120 minutes. Using this, I have set a GPO that updates the respective registry keys that are desired.
However, I need to do this in a Workgroup setting (i.e. environment without domains) for a single computer. From what I understand, the Local Security Policy cannot have new policies added to it, thus the concept from implementing the solution in a domain setting cannot be applied here.
May I ask how am I able to implement the "sticking" of registry keys in a single Windows client machine not connected to any domain please?