The friction it removes is asymmetric in your favour. Somebody who has just decided to talk to you is at their most motivated, and a link that lets them book immediately captures that moment. A reply saying you will find a time tomorrow does not. For a business where the first conversation is the start of the sale, this is a conversion issue rather than an administrative one.
Set the boundaries deliberately, because the default settings will fill your week badly. Define the hours you actually want calls, add buffer time between them so a call running over does not cascade, set a minimum notice period so nobody books you for twenty minutes from now, and cap how many you accept in a day. A scheduling tool without limits produces a calendar that is technically full and practically useless for doing work.
Connect it to your actual calendar, including any personal one, so it can see genuine conflicts. The failure that damages trust is a double booking caused by the tool not knowing about something, and it is entirely preventable.
One judgement call worth making consciously: sending a link to somebody senior, or to a warm referral, can read as making them do the work. In those cases propose two specific times and offer the link as an alternative. The tool is a default rather than a rule.
Add a question or two to the booking form and use the answers. Asking what somebody wants to discuss, and what prompted them to get in touch, means you arrive at the call already knowing the shape of the problem rather than spending the first ten minutes establishing it. It also filters slightly, because people who cannot articulate why they are booking often should not be. Keep it to two questions, since a long form at the booking stage reintroduces exactly the friction you removed.
Send a reminder the day before with whatever the person needs to prepare, since a booking made three weeks earlier is frequently forgotten and a call where neither party remembers the context wastes the slot. Most tools handle this automatically, and adding one line about what to bring or think about beforehand improves the conversation measurably.