3 axis gimble control

hi there i was wondering is it possible to connect a 3 axis gimble to a pixhawk 1 to control the pitch roll and yaw manually but to be able to set different modes for for for instant mode 1 full Manuel control mode 2 full stabilize mode 3 yaw control and so on i know you can control the gimble via the rcesever but i would like to do it via the pixhawk

Those modes are available via a parameter(s). But are not switchable via a switch on the remote control. You need to use a ground station software in order to change them.