Yes, it is possible if icon pack have font and CSS/HTML option.
In attachment we added child theme where in functions.php you can enqueue font files, add new icon groups and it’s icons.
Let us know if you need any more help. 🙂
Hey I’m having issues as well. Trying to add 6 custom icons to this page:
fonts folder attached.
Downloaded child theme
uploaded font files to font folder
and css files to css folder
and added updated function file attached as well
Solution for this topic
I have attached a child theme that contains custom code to use this linecons https://designmodo.com/linecons-free/ which you can use as shown in the attached screenshot.
If you want to use any other font then you need to just edit the child theme code by referring the code added for using linecons.