In the creation of Help items, you are able to control where the Help item appears by limiting its scope. There are pre-defined scopes available in the Help Tab Scope section of the Manage Help Items page: Site Settings -> Manage VisualSP Help Items -> <Title of Help item>
You can accomplish the same thing using a URL Defined Scope:
For example, to display the Help item on every page of a Wikipage library called “oursites” you would put /oursites in the URL Defined Scope field.
But what if you have a more complex situation? Let’s say you still want to have a Help item appear on every page of a Wikipage library named “oursites”, except for a page called “externalusers”.
In our example, the regular expression to use is:
If your situation is similar to the example above just copy and paste this regular expression into the URL Defined Scope field in your environment and replace “oursites” and “externalusers” with whatever words that will correctly filter your Help item. Also, keep in mind that this regular expression is case sensitive.
To exclude a page (in this example, office.com), use this regex: