Actually is pdflatex +pdflatex +biber +pdflatex +pdflatex
I will share a couple of screen captures to help you started.


If you run the MWE of the link you mention the full process will run by itself. (I am using MikTeX)
As output you should get

From Follow-up to "How to call biber"
% !TeX TS-program = pdflatex
\listfiles % see the list of loaded file at the end of the log file
\documentclass{article}
\usepackage[autostyle]{csquotes}
\usepackage[
backend=biber,
style=authoryear-icomp,
natbib=true,
url=false,
doi=true,
eprint=false
]{biblatex}
\addbibresource{biblatex-examples.bib}
\usepackage[]{hyperref}
\hypersetup{
colorlinks=true,
}
%% ##############################
\begin{document}
Lorem ipsum dolor sit amet~\citep{kastenholz}.
At vero eos et accusam et justo duo dolores et ea rebum~\citet{sigfridsson}.
\printbibliography
\end{document}
Inspect your console output of TeXstudio (midway) (or the .blg file with a text editor). I used a file named biberMWE.tex.
Process started: biber.exe "biberMWE"
biber: security risk: running with elevated privileges
INFO - This is Biber 2.16
INFO - Logfile is 'biberMWE.blg'
INFO - Reading 'biberMWE.bcf'
INFO - Found 2 citekeys in bib section 0
INFO - Processing section 0
INFO - Looking for bibtex format file 'biblatex-examples.bib' for section 0
INFO - LaTeX decoding ...
INFO - Found BibTeX data source 'C:/Users/simon/AppData/Local/Programs/MiKTeX/bibtex/bib/biblatex/biblatex-examples.bib'
INFO - Overriding locale 'de_DE' defaults 'variable = shifted' with 'variable = non-ignorable'
INFO - Overriding locale 'de_DE' defaults 'normalization = NFD' with 'normalization = prenormalized'
INFO - Sorting list 'nyt/global//global/global' of type 'entry' with template 'nyt' and locale 'de_DE'
INFO - No sort tailoring available for locale 'de_DE'
INFO - Writing 'biberMWE.bbl' with encoding 'UTF-8'
INFO - Output to biberMWE.bbl
Process exited normally
The last line is the more important. You should look for this nice ending every time you change you .bib database or add a cite in your document.
This is BibTeX) but you need to call Biber. Refer to https://tex.stackexchange.com/a/154754/134144 on how to configure your editor to run Biber for you. – moewe Aug 23 '21 at 18:11Error: One command expansion invalid.Parent Command: bibliographyPrimary Command: bibliography. – Hermi Aug 23 '21 at 18:27