According to the regulations governing indentured migration a Protector of Immigrants was appointed both at the point of embarkation and at the colony upon arrival. 
The Protector at the point of embarkation would inspect the ship to make sure it was in good condition, confirm the numbers embarking and that they were all legal migrants who had agreed to go.
Upon arrival another Protector would board the ship and confirm the numbers arriving, that the passage had been conducted properly according to regulations with all the indentured passengers cared for and duly fed, as well as noting any births or deaths on the voyage. He would also reimburse the Captain for the costs of passage, payments to the ship’s doctor, and any additional expenses. 
The Certificate of Inspection shown here is for the ‘Earl of Clare’  which arrived at Port Louis, Mauritius from Calcutta on the 2nd February 1864 carrying 183 passengers, including men, women, children and infants. One male passenger has died on the voyage.
Once the migrants had been landed the Protector would then oversee health checks on the migrants and their disposition to their places of employment. He would also regularly inspect the plantations, receive and act upon complaints, and publish an annual report which was sent to India.