Can non-commercial authorized pictures be used as background pictures for company activities?

If the company's activities do not involve public profits, but are internal activities, that's fine.

Otherwise it will be very troublesome.

For example, in the promotion of shopping malls, you can't use copyrighted pictures at will. Note that they are protected by copyright. If not, it doesn't matter.

Another example is the internal activities of employees, which is completely acceptable.