URL redirect with spaces and french accents

Good morning, 

My site have been hosted with Squarespace now and have been fixing some URL redirect reported from the Google search console.  The examples below are seen as 404's and would like to fix them.    Some of the reported URL contains spaces and some french accents  and wondering how can I trap these in the URL mapping page to redirect to a proper pager of my choosing.  

Here are some pages that are reported from the search tool....  

/blog-fr/category/Outils Électrique

/blog-fr/category/Événements

I would like to know how to enter them in the tool as the source URL and then write them off to be able to trap them properly instead of users getting 404's

Thanks