Smart upgrade questions

Hello,

We are going to start migrating our clients with smart upgrade.

Everything is configured like in the redbook.

Here are some questions.

If nobody has access to the smart upgrade db, nothing will happen. Correct?

If I create a group with reader access to the smartupgrade db, only those users will get the upgrade. Correct?

Why should I use policies?

Thanks in advance

Greetings

Laikes