Adjustable sling bars for subject lifting systems and methods for operating the same

A subject support lift comprising:

• a lift actuator;
• and
• a sling bar assembly comprising:
• a lift engagement member for selectively coupling to the subject support lift;
• and
• a first sling bar member comprising:
• a first sling hook positioned at an outboard end of the first sling bar member in a lateral direction;
• and
• a first cavity extending into the first sling bar member, the first cavity defining a first guide portion and a first plurality of slots;
• an opposing second sling bar member comprising:
• a second sling hook positioned at an outboard end of the second sling bar member in the lateral direction;
• and
• a second engagement member selectively positionable within the first plurality of slots of the first sling bar member,
• wherein the first sling bar member and the second sling bar member are slidably engaged with the lift engagement member,
• wherein the second engagement member is selectively positioned at least partially within the first cavity and restricts movement of the first sling bar member and the second sling bar member with respect to one another in the lateral direction when positioned at least partially within the first cavity.