Make Olga bite Dotty! (8)
I believe the answer is:
obligate
'make' is the definition.
(I know that obligate is a more specific form of the action make)
'olga bite dotty' is the wordplay.
'dotty' indicates an anagram (a mad or 'dotty' version of the letters).
'olga'+'bite'='olgabite'
'olgabite' with letters rearranged gives 'OBLIGATE'.
(Other definitions for obligate that I've seen before include "Force" , "Compel (someone) to do moral/legal duty" , "By necessity" .)