[QUOTE=Terpe;445958]If you (as the family member) are not settled in UK (ILR holder) and/or if you are unable to demonstrate that you have sufficient funding to cover the duration of the visit, then you'll need your sister will need to apply as General Visitor.
This will be no problem as the requirements are the same.

Brother-in-law is not categorised as 'Family'.


Here's some useful links:-

Can you come to the UK as a family visitor?

Sponsoring a general visitor

Guide to Supporting Documents

Good Luck [/