This article points to how to use clips for Reolink cameras. You may click the links therein based on your need.

Applies to: All Reolink cameras except E1, E1 Pro, FE-P, FE-W, RLC-81MA, RLC-1212A, RLC-1224A, RLC-1240A, Reolink TrackMix PoE, Reolink TrackMix WiFi, Reolink TrackMix Wired LTE, Reolink Duo series and add-on cameras in the NVR kits.

The clip function can help you view the specific area you want to enlarge and check. You can enable the clip function under the Clip Settings option via Reolink software.