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I'm using "acmart" as the template. We have three authors, all from the same university but one of the authors also affiliated with an institute. I'm aware of this question, however, its compiled version generates affiliation/email blocks redundantly.

My current version is like this:

authorNaghi Mamuli$^*$,hspace1em Arastoo Amel$^*mathsection$,hspace1em Homa Saadat$^*$ 
affiliation%
 vspace-1eminstitutionAliabad State University$^*$ hspace0.3em North Laboratory$^mathsection$

affiliation%
 institutionnaghi,hspace0.2emarastoo,hspace0.2emhoma@aliabad.ac.ir

That is compiled as:

As you can see, each of authors, affiliations, emails gets only one single line.

This is fine until we want to add ACM Reference Format:

As you can see, the marks (e.g *) that I have used to associate affiliations, now are visible in the "ACM Reference Format" since it is created automatically from the author names.

Is there any way that I can use "marks" but remove them in "ACM Reference Format"? or change this code to compile concisely like this one but without any problem in "ACM Reference Format"?

The ACM Template discourages the use of a single author for multiple authors.

• The Quick and Dirty Manual mentions explicitly that the template
  discourages the use of a "merged block" for authors.


• The recommended practice is to code all the authors in individual author, affiliation and email commands. An example similar to your listing is marked as a wrong code.


• According to the manual (pages 8-12), the template have been designed to provide metadata for each author to the existing extraction tools. Therefore, these tools cannot determine multiple authors if you use only a single author command.


• There is a closed bug report in the acmart Github repository that explains all.


• There is an answer (here at StackExchange) of the template author explaining it.

Solution proposed in the manual

The manual suggests a solution where each author has an independent author command and a shared affiliation. Using this solution, the names of the authors will be presented one above the other and a single affiliation is presented below.

The example code (in the template download and at page 10 of the manual) is

authorBen Trovato
emailtrovato@corporation.com
orcid1234-5678-9012
authorG.K.M. Tobin
emailwebmaster@marysville-ohio.com
affiliation%
 institutionInstitute for Clarity in Documentation
 streetaddressP.O. Box 1212
 cityDublin
 stateOhio
 postcode43017-6221

The resulting block is like the following:

Other solution: Omit the reference block

However, if you wanna create a single author block, you may check other question at StackExchange.

• You can instruct the template to omit the ACM reference block using settopmatterprintacmref=false before maketitle