The fields that a Contant Type will have are determined on the Manage Fields page.  When adding a field, a dropdown table of possible types will be offered.

The Body is always first offered.

We have seldom reused fields in RetamaVillageAC to have the most flexibility of changing and deleting items.

When a field is added, the parameters of the field will be requested. like how many items can the field be.  

Images parameters are things like type and size and where there are stored.