For someone to call the shots means to be in charge; to make decisions.
Decide what is to be done.
Tell people what to do; to give orders.
1. In our relationship, my girlfriend calls the shots.
2. The hardest thing about becoming a CEO is that I have to call the shots.
3. It’s easy to call the shots when you have strong leadership skills.
4. My new job allows me to call the shots and I feel lucky to be able to lead a great team.
authority, be in control, be in the driver’s seat, be in the saddle, call the tune, command, control, direction, impact, influence, lay down the law, leadership, make the decisions, make the rules, management, power, responsibility, run the show, significance, skill, wear the trousers