You can use a loop inside a template.
1. You have .txt file proxy.txt
2. one of the first steps you set up proxy using set->web browser->set up proxy
3. in the parameter's value:
a. a random line(proxy) from proxy.txt taking with removing {-File.GetString-|-proxy.txt-|-random-|-true-}
b. {-Network.GetProxy-|--} take proxy from avaliable ones in Proxychecker
4. then set up counter {-Counter.Set-|-count1-|-0-}
5. registration
6. in the end of registration set->logic operation if {-Counter.Get-|-count1-}<5
YES then go to 5
else END