Branching chart complete: right to divide dog and sheep (10)

'branching chart' is the definition.
(tree diagram)

'complete right to divide dog and sheep' is the wordplay.
'complete' becomes 'end' (complete means to finish or end).
'right' becomes 'r' (common abbreviation).
'to divide' means one lot of letters goes inside another (inserted letters divide the word).
'and' means one lot of letters go next to another.
'sheep' becomes 'ram' (male sheep).
'end'+'r'='endr'
'endr' inserted inside 'dog' is 'dendrog'.
'dendrog'+'ram'='DENDROGRAM'