it sounds to me that you have a specific person in mind who works as a trainer at a club. Nothing can stop you to contact that trainer but if you want to work with him or her at that club, you will have to abide by the rules of that club, whatever those may be.
Some trainers also train outside of clubs and may train you in a different location.
Are you referring to contacting a trainer on IDEA FitnessConnect? If so, it is completely free and you do not have to pay a membership fee. All you have to do is search www.ideafit.com/fitnessconnect and press the contact button for anyone you are interested in working with.
Please email us at [email protected] if you have any additional questions.
All the Best,
The IDEA FitnessConnect Team