In this answer JNat told on Grace Notes:
Just make a meta thread demonstrating the need, anyone can do it. We'll then review it and then enable the path if it seems appropriate.
In Cryptography, we often see questions related to Math, Security, and StackOverflow. We can say off-topic by selecting flagging->off-topic-> ...asking on StackOverflow... but this is not migration and only for StackOverflow.
We need more migration options other than our Meta. These are most common that having these will be nicer for our site both for especially new users and administrators;
- Information Security (they have Cryptography as off-topic, but we don't have)
Fewer commons are;
- Computer Science
In the current options; the close votes are confusing. We even don't have;
- blatantly off-topic in Cryptography. Adding this also will be helpful.