Run once, run on a schedule, and what the run options mean.
Open the builder: Agents → "Create an agent".
Pick a template to start from, e.g. "Find & email new prospects".
Click "Save" first.
"Run" starts a pass now. The credit estimate is shown beside it.
Click "Not scheduled" to run daily or weekly at a set time.
The arrow next to Run has a dry run that finds and researches without sending.