Translation:We have an agenda full of important meetings.
Typically an "agenda" describes the flow of a single meeting, and a "schedule" or "calendar" describes a group of meetings (and other events). I don't think "agenda" is the right word for this sentence (in American English -- native speaker here). Brits sometimes have different usage, though.
Your translation is fine as well, but "full" is often used when talking about one's calendar or agenda. Another example is "My calendar is full".
You may want to see the following discussions: