Password policy and adding user to a team before first login

when using the standard auth in Grafana, I have seen that the user can put very insecured passwords even if there is something that says this is not secured enough. Is there any security policy that I can have like having a minimal number of characters, or using a combination of numbers, letters and so on ?
An other point is that I cannot put a user in TEAM if he has not signed in for the first time, is there a way to do that ?