1. To round up means to gather things together, or to summarise or conclude.
round people up/round up the figures
You can round up objects or people, meaning to gather them together. You might use the phrase round up when you are concluding a meeting meaning 'to summarise' or to indicate that you want to finish or conclude. You will often hear this phrase at the end of meetings or presentations.
Can you round up everyone in the class for a quick meeting?
To round up the meeting I will go over the actions we have agreed on.