\usepackage{biblatex}
\addbibresource{references.bib}
\parencite{halim2006}
will get:
(Halim, Baig, and Bashir 2006)
Q: How to change from "(Halim, Baig, and Bashir 2006)"
to
(Halim et al., 2006)
\usepackage{biblatex}
\addbibresource{references.bib}
\parencite{halim2006}
will get:
(Halim, Baig, and Bashir 2006)
Q: How to change from "(Halim, Baig, and Bashir 2006)"
to
(Halim et al., 2006)
The number of names listed in the citation in the standard styles is controlled by the maxnames option and its correlates maxcitenames and maxbibnames. By default it is set to 3, which means more than three names will appear with et al. but three or fewer will not. So you can change this to be:
\usepackage[style=authoryear,maxnames=2]{biblatex}
which will make name lists of three or more authors appear with et al. You really shouldn't set it to 1 because it's inappropriate in all styles I know of to use et al. with only two authors.
If you want this only in the citation callouts and not the bibliography then you should set appropriate values for maxcitenames and maxbibnames separately instead.
maxcitenames=2is the option to be added while loadingbiblatexlike\usepackage[maxcitenames=2]{biblatex}) – koleygr Jul 28 '19 at 17:24