Razer Synapse Macro assistance

I've recently bought a Basilisk X Hyperspeed and am trying to set up macros for the side buttons, with little progress. I would like my macro to hold down 3 keyboard keys and the left mouse button simultaneously and only release once I (Let go of the macro/toggle the macro off, either of these would work for me) To have the key held down I've tried leaving the macro with buttons pressed down, with no release, but even when letting go of the macro or toggling it off, it sees the button as still pressed down as there's no timer for it to be released. If I use a release key function inside the macro, there's a delay between the next time the 4 buttons are pressed. If I use the loop function, there's a delay between each time the 4 buttons are pressed. Would someone be able to assist me with this, or if it's not possible to do on Synapse, provide me with an application I can do so?