set your tray to view 2 then right click on each one to enable autofire (green outline), will nee to set it to maintain in the controls settings. also better to time firing torps for hitting th hull, so only leave phasers on autofire. i use a macro on my g13 since i have my tray setup to 3 row setting and don't use ingame autofire.
You can enable auto-fire be right clicking of the weapon. (in the tray)
having beams in the tray is redundant esp at admiral ranks since it takes up 4 -8 slots (depending on build) and better to place on row 4 for reviewing you build since this way you can fit all 30 abilites to the tray on the main 3 rows.