Let's try to answer this really simply.
A trust is nothing more than a relationship. It occurs when one person, often called the settlor, gives property to another person—the trustee—to manage on behalf of still other people.
So to create a trust person A (Settlor) allocates some money etc. to person B (Trustee) ordering that person to manage it for the benefit of person C (Beneficiary). Documents are drawn up and agreed and signed by persons A and B. Person C does not have to agree or sign. All three parties can be multiple people or organizations.
There may be, and often are, conditions; e.g. Person C does not get the money until they are 18, or it can only be used for Person C's education, or the funds pass to someone else after a time.
The Trust is not a company. It doesn't have employees or shareholders.
The key here is that the money now does not belong to person A - they cannot use it or take it back, nor unilaterally change the way it is used. Nor does it belong to person C unless person B (acting on the documented instructions) gives it to them.
If B does not follow the terms of the trust they could never sued by either A or C.