visit family members at different dates for the first time

[soulfullness]

Hi There

I may get the visa approval under skilled migration categary soon. We are five members altogehter. However due to examinaions ofchildren two of us intend to visit first prior to the expiry date of our medicals. Is it allowed to do so ? Others will visit at different date but prior to expiry of medicals.

The second problem is the fund. How much should I take if we are two to visit first and then remaining three members to go to Canada at a different date? Can we take fund at pro rata basis as per number of members visiting ?

Can we take the fund in UK pounds instead of Canadian dollrs?

Pleas advise.