Embeddedapp field allows the designer to form a one to many relationship between two Microapps.
For example, A single restaurant receipt can have multiple items. A Microapp for receipts can use an Embeddedapp for individual items. This forms the one to many relationship.
This is a powerful feature and should be used with descretion. It is supported for only one level, Microapp A embeds Microapp B. It is not supported to then have Microapp B embed Microapp C.
The target Buzz and Microapp must be identified.