it is something like [time = number] it might be timer or have no square brackets but it something along those lines.
First of all, if you are making a 'lockette timer', make sure you already have a lockette applied to your object or door. The lockette could be locked with [Private], or it could be locked with [More Users] [Everyone]. Either way, a lockette timer could be set to any of the choices listed above. Making a lockette timer is really easy, in fact, it is easy as adding a person to your lockette. To set a lockette timer, right click the selected lockette you could like to set and prepare to type in "/lockette 3", as the next step will tell you how to set a timer. Basically to set a timer, type in "[Timer:X]" and you're basically done. The 'X' in this case stands for the amount of seconds you would like to apply. For example, [Timer:3] would apply 3 seconds to your lockette timer. If we were to add 3 seconds to our timer, you would type in "/lockette 3 [Timer:3]". After that, you are done and you are ready to go with your new lockette timer.