To manage the fields in a record layout, go to Settings > Modules and Fields > select the module you want to edit.
We will always be working out of the ‘Standard’ layouts. In the next few videos about module customization, we will be working with this feature.
Also, when you first click into a record to view it, you may have to toggle the “Show Details”/”Hide Details” button to be able to see all the record’s fields.
For an in-depth review, see Zoho Knowledge Base