We do not provide support for hacks, so use them at your own risk. If you're not comfortable with coding, we recommend against using this workaround.
Setting a custom link on a project in your Portfolio Grid is not a default Semplice feature, since by default they are meant to link to your projects. However, we can use some simple code to manually set a link on a Portfolio Grid project.
Just add this code in the global custom JS editor under Customize > Advanced > Custom JS:
Repeat this code to replace more than one URL on your site.