We added the option to add tags to contacts. This allows you to add information to your customers and filter them if you want, e.g., to select all your A-Customers or hot leads.
How to add tags to contacts:
Go to Customers > Contacts and select edit (icon with the tree dots)
Add tags to the contact at the bottom.
You configure tags in Settings > Tags. Tags need the type all (use tag with all features) to select in the contact.