By default, the Clients List is set up to just display information about the Primary Contact for each of your clients. But what if you want to see information for all contacts for that Client here in the Clients List?
Open the Clients List
Click Custom view > Edit columns
Click Add new column, then add columns for contact First name and Last name
Click on the Cog icon at the top of the 'First name' column
In the 'Column options' box
Under 'Show Contacts', Select All
You'll now see any Clients who have multiple contacts will be showing rows for each of those contacts
Click Done > Save Changes
Now, any time you add columns to the clients list, you will see the separate information for each contacts from each client. For example, if you added a column for Contact Email, you would see the individual email address for each contact.