This summary is not the rule. The rule text controls.
Here's a plain English summary of this rule:
An injunction is a court order that stops someone from doing something or requires them to do something. This rule explains that you can ask for an injunction in two ways. You can file a separate lawsuit just to get an injunction, or you can ask for one as part of a larger lawsuit you're already filing for other reasons.
If you're seeking an injunction, you don't have to choose between that and other types of relief. You can ask for money damages or other remedies at the same time you ask for the injunction. The court can address all of these requests together in the same case.
An injunction can come at different points in a case. The court might include it as part of the final judgment after the case is fully decided. Or the court might grant it earlier, while the case is still going on. When a court grants an injunction before the case is finished, it's called a temporary injunction. This lets someone get quick protection from the court while they wait for the full case to play out.