This summary is not the rule. The rule text controls.
Here's a plain English summary:
These are the rules that control how appeals work in Indiana. If you want to challenge a decision from a trial court and take your case to the Supreme Court or the Court of Appeals, these rules tell you how to do it and what steps to follow.
The rules aren't completely rigid, though. If needed, the court can allow someone to deviate from these rules. This can happen if a party asks for an exception, or the court can decide on its own to allow a different approach. This gives some flexibility for unusual situations that the standard rules might not fit perfectly.