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.