Hi Tech-ni-kal,
Thanks for signing on!
When you run the agent, it will download a work unit from the UD server. After your UD Agent program shows that the "Primary Task is executing" you no longer need to be connected to the internet.
Your machine will then process and complete the job. The length of time varies. It could be a couple of hours, or a couple of days. Once the work unit is complete you will need to connect to the UD server to transmit your results back. When you connect, it will send the results, then download the next job for you.
There are a couple of utilities that are useful for people who do not maintain a constant connection: UD Dialer and UD Monitor. Read the other threads in this forum for more info.
As for you last question. You can only be on one team at a time. However, if you install the program on more than one machine, you could theoretically create a second login account and operate on two teams. However, we hope you will be a long lasting member of Team UBBDev!
-Tacks