
Explanation:
Create a Conditional Access policy
1. Under Access controls > Grant, select Grant access, Require multi-factor authentication, and select Select.
2. Confirm your settings and set Enable policy to On.
3. Select Create to create to enable your policy.
Sign-in frequency
Sign-in frequency defines the time period before a user is asked to sign in again when attempting to access a resource.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional- access-conditions
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional- access-session
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional- access-session#sign-in-frequency