Hi, @True.ankur84!
You don’t need to have an account in Memsource. TWB will provide one for you. You can learn more on here.
You just need to be logged into your TWB platform account.
If you claimed a task, TWB will send you a email. There would be a sentence like this:
"You claimed a Translation task for “[name of project]” from [source language] into [target language] with Translators without Borders.
Please translate this task in Memsource, our CAT tool:
[link]"
But you can also go to Claimed Tasks on TWB Kató Platform and click to translate your task.
Happy translating! 