I've noticed some indicators have parameters to use in conjunction an optimization, but most don't. How can I change or update these indicators to included parametrization?

The two I'm interested in right now are "external symbol above value" and "external symbol below value".

Thank you.
John Burford

Welcome to the forums John.

These are not indicators but conditions of a Rule-based strategy. Indicators are to be found under the "Indicators" list (strike Ctrl-F11). I renamed the confusing topic title "Parameterize indicators" accordingly.

Simple answer: you can't. Adding a parameter to a Rule requires modification of its XML code, be it manual or tool-based. Question is, what exact modification of these Rules do you think is required? Maybe we can achieve it by releasing a new rule if the parameterization is worth it. But before answering please review the list of rules in an additional library called Community.Rules - chances are that something of that might have already been implemented.