Demo account questions

[PengVang]

How do i add more funds to my demo account? 

How do i change my lot/volume? 

[Jonathan Mcbrine]

What broker?

[antiseptic]

You have to login to your brokers website and do it from there.

[Sergey Golubev]

PengVang:

How do i add more funds to my demo account? 

How do i change my lot/volume? 

You can open the other demo account (you can not add more funds to demo because no any funds in demo).

Change lot size?
You can open new order:
New order (or F9) and select the lot size (Volume).