To add or remove contacts from an existing list, follow these steps:
1. Go to the CRM section on the left sidebar.
2. Select the contacts you wish to add by checking the boxes next to the contact's name.
When you select a contact the background color changes from white to blue.
3. A plus (+) will appear on the colored bubble of those lists which do not include the chosen contact. Click it and the contacts will be added automatically.
4. A minus (-) will appear on the colored bubble of those lists which already include the chosen contact. Click it and the contacts will be excluded automatically.
❗️Removing a contact from a list does not delete the contact from the CRM itself.