how can i change max user?

how can i change max user in shard? i try change capacity in srShard and i Decompile then i Compile again. I restart sv but shard user in smc not give me new max user in ServerControl. Please help me how can i fix it.
And i want to add server 2 under current server. Any1 please help me how can i add it

on certification need

i added max user in server. Now i need add sub server below current server in one big server. Please help me