Question: different clients accessing/using diff URLs

[<dt3...@ya...>]

New user to curl-loader. Great tool.

Question:
Is it possible to set up a conf file whereby each client uses a specific/different set of URLs(=unique to that client)?
1. In its simplest form, I want to be able to have

client_1 use URL1

client_2 ... URL2
...
client_n ... URln
simultaneously.

In this case, 

- each set of URls for a given client has only one (possibly unique) URL in it
-n clients will be running simultaneously,

- each client will access one URL.

2. In its most complex form, I want to be able to have

client_1 use URL1_1 through URL1_n  sequentially
client_2 ... URL2_1 through URL2_m seq
...
client_n .. URLn_1 through URLn_p seq
simultaneously.

In this case, 
- n clients will be running simultaneously,

- each client will access its set of URL sequentially.

If this is too complex to do, I'll be happy if I can do the simplest case (#1 mentioned above).

Thanks in advance for taking time to respond to my question.

Regards,
DT