So, the algorithm code will

icaro56 — Tue, 17 Nov 2015 18:12:38 +0000

So, the algorithm code will be thus? (Many friends)

for (int i = 0; i < friends.size(); i ++) {
add-rosteritem peter localhost + friends.get(i).username + localhost friends.get(i).name Friends both
}

You may use

badlop — Tue, 17 Nov 2015 17:33:14 +0000

You may use mod_shared_roster, or enable mod_admin_extra and use the commands add_rosteritem or push_roster.