My question could be a duplicate of the below question that was not answered.
Email and Phone Task fields are missing in lightning experience
Just added a custom field in Activity object using Salesforce classic. Standard Comments and the custom field meant to be available on Task layout.
I switched back to Lightning Experience and tried to verify it. But, I have not found those two fields (the standard Comments field and the custom field which I have created).
Please guide me on how to bring those two fields in Lightning Experience. Thanks.
Best Answer
I was able to add a custom field on Activity and add that on Task and Event page layouts while being in Lightning Experience. Have detailed out the scenarios with screenshots as how I was able to do this. All these steps were carried out in Lightning Experience (LEX).
Scenario 1 - While adding a field on Activity
Scenario 2 - When field is already added on Activity, but not available on the Task/Event layouts