In this text, there are multiple groups of people who have plans and meetings with each other. Here's a summary of their schedules:

1. Andy and Samantha will meet at Caroline's Café on Thursday, November 30th, at 4 PM to discuss AI projects and other matters.

2. On the same day, Mei and Peter have a meeting scheduled at 1 PM, followed by discussing the community garden plans with Samantha at Caroline's Café on Wednesday, November 30th, at 2 PM.

3. Andy, Diego, Leo, and Noor will meet under the oak tree at noon on an unspecified day for their AI project discussion. They will also have coffee together at Caroline's Café earlier that day (the exact time is specified as 12 PM in Andy's conversation with Diego).

4. Andy, Mei, and possibly others will meet again at Caroline's Café on a day after their initial meeting, discussing AI projects and gallery show aspirations. The specific date and time are not mentioned in the text.

5. There is an altered meeting location for the AI project this week; instead of meeting at Caroline's Café, they will gather under the oak tree at noon on a day that isn't specified in the text.

6. Andy, Diego, Leo, and Noor have a revised AI project meeting scheduled under the oak tree tomorrow (the exact date isn't provided), followed by coffee at Caroline's Café.

7. Finally, there is a gathering of people who enjoy spending time together under the oak tree, but the context or purpose of these meetings isn't clear from the text. These gatherings could be related to the AI project or simply social events among friends.