As a proverb goes, time is money. It is especially true in the modern society where effeiciency is critical. Therefore, it is very important to learn how to urge others, if necessary, in the proper way. The following are some sentences that may help.
Hurry up. The meeting will be started in a minute.
It's already 11:30. Let's speed up.
Try to hurry a little bit more. They are all waiting for us.
Get moving or we won't be able to finish the work.
I have to remind everybody that we have a March deadline for the documents.