Group Policy Objects - Drive Mapping with Passwords

Struggling to Map a Drive to an external source with a Username and Password through GPO.

We are using SIMs as our MIS in school and use certain reporting features that require a mapped drive to the LAs Server, in legacy GPO you could map a drive with a username and password using the CPassword Attribute - but due to being a "known security risk" this was removed by Microsoft.

Our users are restricted and have locked down profiles so dont have permission to map the drive themselves using the username and password and because of CPassword Attribute being removed from GPO we cannot map the drive?

Any help in doing this through GPO?