in such fuse blocks you have to buy a whole new positive terminal - you will face a massive problem here because this car was not sold new in Pakistan.
If you want to have this done low cost then you will have to rig up some other fuseblock terminal for that try reading the print off the fuses and make a diagram of their arrangement then find something similar.
if you find a very high ampere rating fuse in there (like 300A or more) then its the main fuse - including starter power.