An adjustable bench can make two sessions look similar while changing the exercise more than you realize. Record the incline setting you use. Different benches may have different angles at similarly numbered positions, so identify the equipment as well. A clear setup reference makes later comparisons more meaningful than relying only on the dumbbell or barbell load.
Check that the adjustment mechanism is secure before sitting or lying down. Use the bench according to its design and load limits. Choose a position that supports a controlled, comfortable movement. If the setup is unfamiliar, seek instruction rather than forcing yourself into an awkward arrangement to match a demonstration filmed on another piece of equipment.
Keep the working conditions reasonably stable when evaluating progress. A changed angle, exercise order, or range of motion can alter the experience. Note those changes instead of treating a different number as automatic improvement or decline. The log should describe what you did, not flatten every pressing variation into a single score.
Review whether the chosen incline serves the intended role in your routine. You do not need to sample every available angle in one session. A manageable selection is easier to learn and repeat. When you do change the setup, make it a considered adjustment with a clear reason and enough consistent practice to understand the result.