"subject to instructions" is grammatically correct and can be used in written English.
It is typically used to indicate that something is dependent on following specific directions or guidelines. Example: The delivery of the package will be subject to instructions provided by the sender.
The members of our State legislature are annually elected--they are subject to instructions--they are chosen within small circles--they are sent but a small distance from their respective homes: Their conduct is constantly known to their constituents.
Gerald Shamash, who represents Paul Gascoigne and the former BBC executive Alan Yentob said: "Subject to clients' instructions, we would want to have a review of the decision-making process.
Therefore, executives can often gain support from institutional investors in opposing social issues unless these institutions are subject to contrary instructions from their clients or if pursuing these issues would create financial liabilities for the company.
The Director may, from time to time, designate other officers or agencies of the Federal Government to perform any or all of the functions hereby delegated to the Director, subject to such instructions, limitations, and directions as the Director deems appropriate.
They are to be subject to no instructions.
Most classical neuroimaging studies of human memory require the subject to follow task instructions, discriminate stimuli, make a decision and, finally, press a button to respond.
Both exercises required subjects to follow instructions, and to coordinate upper limb and bilateral arm movements.
Course offerings are subject to change until instruction begins.
At airports, in control zones, all movements are subject to permission and instruction from air traffic control when visibility is typically less than five nautical miles or the cloud ceiling is below 1,500 feet.
