The exact mechanism is given in the "Visa Office Specific Instructions"
According to Colombo, Sri lanka Visa Office specific instructions document,
"SETTLEMENT FUNDS
Refer to the "Proof of Funds" section of our Web site for exact figures and
instructions.
Provide proof of unencumbered and readily transferable funds in a convertible
currency available for settlement in Canada (for you and your family members):
• current bank certification letter; or
• evidence of savings balance; or
• fixed or time deposit statements."
Please check your visa office specific instructions regarding this from the following link
http://www.cic.gc.ca/english/information/applications/skilled-mission.asp