No, simultaneous use is not possible: it is possible to memorise fixed-code OR rolling-code remote controls. the first one memorised determines the type accepted by the receiver, until a possible memory reset. An exception is the HALO automation, which only accepts rolling code remote controls.

Key Automation's SUB and PLAY transmitters fall into three different families, recognisable by the colour of the integrated LED: SUB/PLAY R (blue LED) is a 4-channel rolling code transmitter, which is the most common version included in kits and compatible with all automations. SUB/PLAY F (amber LED) is a 4-channel rolling code transmitter that allows you to add a new transmitter to an existing installation without accessing the receiver, if you have a transmitter already programmed in the target system. In other words, it allows you to authorise a new transmitter remotely, provided you have a transmitter already stored in the same installation. SUB/PLAY N (green LED) is a 4-channel fixed code transmitter, which can copy other fixed code transmitters from Key Automation or other manufacturers.