What is a custom alias?
Same thing as a custom slug.
"Custom alias" and "custom slug" mean the same thing in GoloLink - a slug you choose yourself instead of a random one. The product and these docs call it a slug. See What is a slug? and How to customize a slug.
Related articles
Bulk actions - Select multiple links and delete them in one action.
How to change a destination URL - Edit it directly, or schedule a future swap.
How to create a branded short link - Connect your domain first, then pick it when creating a link.
How to create a link - Name, destination, optional branded domain, optional custom slug.