A simple & fastest solution is this way:
e.g. You have 3 fields you want to group:
- exclude the field 1 & 2 from display
- output the 3rd field with rewrite
Fields: field_event_motto -> check "Exclude from display"
Fields: field_date -> check "Exclude from display"
Fields: field_event_location -> check "Rewrite the output of this field"
the rewrite code: e.g.
<div class="wrapper>[entity_id_2] - [entity_id] - [entity_id_3]</div>
# [entity_id_2] == Fields: field_event_motto
# [entity_id] == Fields: field_date
# [entity_id_3] == Fields: field_event_location
PS: Once given a rewrite code the textbox is hidden sometimes. Reload and try again.