A buyer who rings about a listing at five on a Saturday is often calling three agents. The agent answers right away, shares the details you have approved, such as price range, size and viewing times, and asks a few questions about the buyer's situation. It does not negotiate or comment on value, and it leaves offers to you.
Your qualification questions might cover budget, timing, whether the buyer has finance in place and whether they have a property to sell. The agent records the answers and books a viewing into your calendar, allowing travel time if you set it. Strong leads can be passed straight to you. The follow-up call afterwards asks how the viewing went and notes any next step. Information about the property comes only from what you provide.
Keep your listing information current, since the agent can only repeat what it is given. Decide which agents or team members take which calls. Set viewing hours and how much notice you need. After the first month, compare the viewings you attended with the leads the agent handed over, and tell us which questions were useful.
Teams with several agents should decide how leads are shared. Round-robin, by area or by listing are common choices. The agent can follow whichever rule you pick, so each buyer reaches the right person first time and nobody is left wondering who should call back.