Scenario
User wants to set Phone Number and Email Address fields as mandatory or required fields on Contact Records
Solution
1. Navigate to Customization > Forms > Entry Forms.
2. Look for the 'Preferred' Contact record custom form then click Edit. See sample below:
3. Click Fields tab, then under Main subtab, look for Phone and Email description. Make sure to tick on the boxes for Mandatory.
4. Click Save button to apply the change.
Result
Both email and phone fields are now mandatory.