Halliday & Matthiessen (2014: 581):
There is no causative form of the conative – that is, no word meaning ‘make ... try’; this can, of course, be expressed analytically, for example
(she) | α made | (him) | ×β try | +γ to eat | (it)
The causative of the reussive has help, and perhaps enable:
reussive: John managed to open the lock
(caus.) Mary helped John to open the lock