Canon EOS Rebel SL3 DSLR Camera with 18-55mm Lens (Black) - Manual (Page 205)

205
Setting Continuous AF
This function keeps subjects generally in focus. The camera is ready to
focus immediately when you press the shutter button halfway.
1
Select [Continuous AF].
z Under the [
z
] tab, select [Continuous
AF] , then press < 0 >.
2
Select [Enable].
z Enabling this function reduces the number of shots available, because the
lens is driven continuously and battery power is consumed.