Either use keybinds such as arrow keys for turning your alts and not your main, or get used to using interact with target on alts (with click to move enabled) followed by a quick tap of a movement key to keep them from running in the direction.
Or keeping them following your main and just following your target around with your main, and your alts will turn toward your main (same thing goes for quick follow and movement key to break it, if in range to follow, but interact with target has longer range than follow, and does not require your main to be by the target to work).